Step 5: Pull up on the seat belt strap and feed it in as far as it will go, so the strap is completely taut and rigid. In a crash, the seat belt won’t move at all, holding the car seat in place ...

The non-wrench end of the Z3 takes the form of a pry bar with a built-in nail puller. A clip on the back of the multitool allows it to be hung on belts, pockets or backpack straps.

If you’re not sure if your ride is so equipped, check first before poking and prodding around the seat belt bases. Some employ these devices in the recoil spool, and some in the inner belt’s base.

The Boa Constrictor strap wrench from Accent Home uses a nitrol/neoprene strap with 4250-foot pounds of torque efficiency and is considered by the manufacturer to be virtually indestructible. The ...