This powerful air hydraulic riveter is fast and rugged enough for production work. The air riveter’s nosepieces are constructed of chrome plated steel for maximum durability. Features include a safety cap to collect spent rivet pins and an air relief valve to prevent overloading. Lightweight cast aluminum body Machined chrome plated steel nosepiece Air relief valve prevents overloading for long life Safety cap collects spent rivet pins Interchangeable nosepieces for rivets: 1/4 in, 3/16 in, 5/32 in, 1/8 in. (located in base) Requires hydraulic oil, not included.