The Klein Tools Tool Bag, Bull-Pin and Bolt Bag, Tunnel Loop, Leather, 5 x 10 x 9-Inch is a leather bolt bag made for carrying bolts and bull pins on the job. This is a tool pouch designed for steelworking hardware carry and belt-mounted access. Model Number: 5416L. If you need a simple, durable way to keep bolts close and bull pins parked where you can grab them fast, this bag is built for exactly that job.

What matters here is the layout. The main pouch is a 10-inch deep bag, which gives you useful storage for bolts and similar hardware without turning into a floppy catch-all. On each side, Klein added a bull-pin loop, so the pins stay separated from the pouch contents and are easier to reach. That sounds small until you are working in gloves and do not want to dig through loose hardware every time you need a pin.

The construction is straightforward in the best way. Klein uses leather for the pouch and backs it up with a double bottom, which is where a bag like this usually takes abuse first. That extra reinforcement matters if the bag is riding against steel, rough lumber, or other jobsite surfaces all day. For a product in this category, durability is not about fancy features. It is about whether the bottom and sides keep their shape and hold up after real use.

The tunnel loop design is another practical choice. Instead of complicated clips or temporary attachment hardware, this bag slides onto a belt and stays put. It fits belts up to 3 inches wide, which makes it a workable choice for heavier-duty work belts used in construction and steel-related tasks. Once mounted, the bag sits close to the body and keeps the load in a predictable spot.

In real-world use, this pouch is about speed and organization more than storage volume alone. A dedicated bolt bag helps keep fasteners where you expect them, and the side loops help stop bull pins from bouncing around with the rest of your hardware. That saves fumbling, especially when you are moving between positions, climbing, or working off structure where clean access matters.

This Klein Tools pouch makes the most sense for ironworkers, structural steel crews, and general construction users who specifically need a leather bag for bolts and bull pins. It is also a good fit for tradespeople who already wear a belt and want a simple, durable hardware pouch instead of a larger organizer. If your work involves handling loose steelworking hardware and you want a belt-mounted pouch that does not overcomplicate the job, this is the right kind of tool organizer.

Simple, Tough, and Built for the Right Trade

The Klein Tools Tool Bag, Bull-Pin and Bolt Bag, Tunnel Loop, Leather, 5 x 10 x 9-Inch does exactly what a good bolt bag should do: carry hardware, keep bull pins handy, and survive real belt time.

• Who it's for: Ironworkers, steel crews, and construction users who need a dedicated leather pouch for bolts and bull pins.
• Why it stands out: The double-bottom leather build and bull-pin loops on both sides show this bag was designed around actual use, not shelf appeal.
• Worth knowing: This is a focused single-pouch setup, so it is great if you want quick access and durability, not a bunch of divided storage.

• What is this pouch made from? It is made from leather and features a double bottom for added durability.
• Will it fit a wider work belt? Yes. The tunnel loop fits belts up to 3 inches wide.
• Does it have dedicated bull-pin storage? Yes. There is a bull-pin loop on each side of the bag.
• How deep is the bag? The bolt bag is 10 inches deep.