Ergodyne Squids 3780 Power Tool Trap, Small, Black 1000D nylon with water resistant backing and nickel-plated cast iron D-Ring Two hook and loop straps secure trap to power tool battery for safe and easy tethering Maximum safe working capacity: 6 lbs. (2.7 kg) Third party tested using a 2:1 safety factor Will fit cordless power tool batteries up to: 3.5"L x 2.75"W x 2.5"H (9cm x 7cm x 6.5cm)