Wire Pull vs Top Pull Smoke Grenades: Which Should You Choose?
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Shop the WP40-D Wire Pull Shop the TP40 Top Pull
Wire pull and top pull are two ignition styles on the same 60-second, medium-format smoke grenade. This guide compares the WP40-D wire pull smoke grenade and the TP40 top pull smoke grenade — same burn time, same nine colors, different ring motion. It is not a comparison with the Twin Vent II (dual-vent 25-second burst) or the EG25 (25-second micro). For the full lineup, see the smoke grenade comparison guide.
Same Smoke Output, Different Pull
Both the WP40-D and TP40 are Enola Gaye medium-format grenades rated at roughly 60 seconds of burn from a single top vent. Shutter Bombs stocks both in all nine colors: black, blue, green, orange, pink, purple, red, white, and yellow. Both use the same non-toxic, cool-burn formula — smoke without open flame — and both are CE Approved and ATF Compliant, so no license is needed to buy or use them in most states.
That means your decision comes down to one thing: which ignition motion fits your hands, your gloves, and your shooting workflow. Cloud size, color saturation, and duration are the same either way.
How Wire Pull Works (WP40-D)
Grip the canister in one hand, holding it by the base. Hook a finger through the wire-pull ring at the top of the can and pull it firmly to the side — never straight up. Pull force is roughly 5–8 lbs, about the same as opening a stubborn soda can. Smoke begins within a few seconds.
If you have been searching for a pull pin smoke grenade, this is it — the wire ring works like a pin, and "wire pull" is simply the manufacturer's name for the mechanism. Most first-time users find wire pull intuitive because the side-pull motion is exactly what they expect a pin to do.
- Lowest price per can in the 40mm family ($12.50)
- Familiar side-pull "pin" motion — the most common ignition style in the wire pull smoke bomb lineup
- Works well when you have both hands free before the shot (assistant or tripod setup)
How Top Pull Works (TP40)
Grip the body firmly and pull the top cap straight up. That is the entire mechanism — no wire loop to locate, no finger to thread. Smoke output is the same 60-second, single-vent burn as the WP40-D.
The upward cap pull is easier to execute with thick gloves or when your other hand is holding a camera or remote: you are not fishing for a wire loop with padded fingers. It is also the faster motion to repeat, which is why the TP40 is the pick for one-handed redeploys between takes.
- Top cap pulls straight up — easiest ignition with tactical or winter gloves
- Natural one-handed activation for solo shooters
- Same 60-second burn and nine-color range as the WP40-D
Ignition Technique and Misfires
Whichever style you choose, technique is the same three habits. First, commit to the pull — a slow, hesitant tug is the most common cause of a failed ignition on either mechanism. Second, hold the can by the base: these are cool-burning grenades, but the canister itself gets hot during and after the burn. Third, light outdoors (or in a large, ventilated space with venue approval) and check the safety and legal guide for your state's rules before the shoot.
Safety
If a can does not ignite, set it down on a non-flammable surface, wait at least 60 seconds, and never re-pull or open it. Submerge misfires in water for 48 hours before disposal. Every Shutter Bombs can is covered by the 100% Product Guarantee — email a photo or video of a faulty unit to hello@shutterbombs.com for store credit at 1.5× the unit price or an exact refund.
Side-by-Side Comparison
| WP40-D Wire Pull | TP40 Top Pull | |
|---|---|---|
| Price | $12.50 | $13.25 |
| Burn time | ≈60 seconds | ≈60 seconds |
| Vents | Single, top | Single, top |
| Ignition | Wire ring, pull firmly to the side | Top cap, pull straight up |
| Pull force | ≈5–8 lbs | ≈5–8 lbs |
| Colors | 9 | 9 |
| Best for | Lowest per-can cost, assistant setups | Gloves, solo one-handed redeploys |
A 60-second burn is enough for two to three posing setups if you direct your subject before pulling. If you need a longer single window — say, a walking sequence or a couple's session where you reposition mid-burn — step up to the 90-second WP40 wire pull, which delivers 30–50 usable frames per can. The full spec breakdown across every model lives on the smoke bomb size chart.
Who Should Buy Which
Choose the WP40-D if:
- You want the lowest price per grenade in the 40mm family
- The classic side-pull pin motion feels natural to you
- You have both hands free at ignition — an assistant lights while you shoot, or you work from a tripod with a remote
- You are buying in depth for a long session and counting per-can cost
Choose the TP40 if:
- You shoot solo and need one hand on the camera at ignition
- You wear tactical or winter gloves on set
- An upward cap pull is easier for your grip strength or mobility
- You already use top-pull grenades and prefer the motion
If budget is the only deciding factor, also look at the EG25 micro smoke grenade — at $8.00 per can it is the cheapest entry point in the entire lineup, with a quick 25-second burst that suits single portrait setups rather than sustained clouds.
Tip
Buy one of each before a big client shoot. A five-minute test pull in an open parking lot tells you more about which motion suits your hands than any spec sheet — and with a 10+ year shelf life, the spare won't go to waste.
What This Guide Is Not Comparing
People searching for types of smoke grenades often conflate three different decisions, so to be explicit:
- TP40 vs Twin Vent II — not the same comparison. The Twin Vent II is a dual-vent wire-pull grenade that dumps its entire charge in about 25 seconds from both ends at once. It is built for instant width and density — the "hero shot" can — not 60-second sustained posing.
- 60 seconds vs 90 seconds — if you want the longest burn in the 40mm family, the standard WP40 runs roughly 90 seconds at $13.00, and the Gender Reveal WP40 puts the same 90-second platform in discreetly labeled pink or blue cans. Browse all of them in the long-lasting smoke bombs collection.
- Medium vs micro — the EG25 is a 25-second mini, a different tool for quick bursts and tight budgets.
The WP40-D and TP40 are the only two cans in the lineup that are true like-for-like twins: 60 seconds, single vent, nine colors, with the pull mechanism as the only variable.
Frequently Asked Questions
Do wire pull and top pull produce the same amount of smoke?
Yes. Both the WP40-D and TP40 are medium-format, single-vent grenades rated at roughly 60 seconds of burn. The ignition style changes how you start the can, not its output volume, density, or duration.
Is a wire pull smoke grenade the same as a pull pin smoke grenade?
Functionally, yes. "Pull pin smoke grenade" (or pull pin smoke bomb) is the common search term; "wire pull" is the manufacturer's name for the mechanism. You hook a finger through the wire ring at the top of the can and pull it firmly to the side — the same motion people picture when they think of pulling a pin.
Is the TP40 the same as the Twin Vent II?
No. The TP40 is a 60-second, single-vent, top-pull grenade. The Twin Vent II is a 25-second, dual-vent, wire-pull grenade that vents from both ends at once for a dense, wide, instant cloud. They are completely different tools.
Which is better for wedding photography?
Either works — output is identical. Most wedding photographers default to the WP40-D for the lower per-can price and the familiar side-pull motion, especially with an assistant handling ignition. Choose the TP40 if you shoot solo and need glove-friendly, one-handed activation. Browse the wedding smoke bombs collection for color ideas.
Can I mix wire pull and top pull in one session?
Yes. Colors and burn times match across both models, so clouds blend seamlessly. A common split: the assistant carries wire pulls, the photographer keeps a top pull in a pocket for one-handed redeploys between takes.
What about the 90-second WP40 wire pull?
The classic WP40 is a separate product: roughly 90 seconds of burn from the same wire-pull, single-vent platform, in all nine colors. It is the pick when you need a longer continuous window — 30–50 usable frames per can — rather than the 60-second WP40-D/TP40 format.
Ready to Get Started?
Pick the pull that matches your workflow — or grab one of each and let a test pull decide. Orders ship certified hazmat ground from the US warehouse in 1–3 business days, and shipping is free on orders of $225 or more. Not sure which model fits your shoot at all? Start with the smoke grenade buyer's guide.
Shop the WP40-D Wire Pull Shop the TP40 Top Pull