Pistol Grip Pneumatic Power Spin Rivet Nut Tool. An economical tool to install your rivet nuts that offers a coated pistol grip handle for operator comfort. Featuring a reversible, teasing trigger throttle for precision factory finish look. BP-350Q is equipped with a quick change nose assembly that easily snaps on and off to change to the desired Riv-nut size., You have a choice of the following nose assembly sizes: 6-32, 8-32, 10-24, 5/16. And 3/8-16. Three Day Tool services this tool.