KAMSIN KT38 Air Nails Punch NailerRemoval Nails Range & Replaceable Piston DriverShank Dia: 0. 079'' 0. 197'' (2 5 mm), less than 38 mm in length are acceptable; Comes with an Extra Piston Driver to help you replace and maintain Stout & LightThis tool only weighs 2. 4 lbs(1. 11 kg) with die cast aluminum housing is for reducing the operator's fatigue; Durable driver and bumper are in stable performance and long service life Powerful & Easy RemovingThe long thinner nose is easy to aim