3x pneumatic rivet gun features a feathering trigger that allows you to slowly begin riveting without damaging metal surfaces. Cylinder & valve are precision machined & hardened for long life. Other features include a spring retainer & regulator, powder coated finish, & lightweight aluminum handle. Bpm: 2160. Alum capacity: 3/16″. Wt: 2.5 lbs. Made in U.S.