Taylor Pneumatic Tools 3X straight rivet gun. Perfect for use in confined spaces and very handy when combined with 90 rivet gun head. Delivers 2100 blows per minute with a rivet capacity of 3/16". Comes with retention spring and Taylor's great lifetime manufacturer's warranty. Shank diameter of .401 and bore & stroke of 1/2" X 2-7/8".We ship APO,FPO, International and combine shipping.