3X Rivet Gun KIT Click HERE for more information! 3X AIR HAMMER KIT FOR SOLID RIVETS. COMES WITH 2 BUCKING BARS, 4 CUPPED UNIVERSAL HEAD BITS (3/32, 1/8, 5/32 & 3/16), A 1" FLUSH DIE, AND 2 RETAINING SPRINGS. HRH-3X-737