"ITS ALL ABOUT THE GRIP" GRIPEDGE R.P.T. (Rounding Prevention Technology) bits are designed to replaced standard drive tools. 5/32, 3/16, 1/4", Wing Nut driver, Bit coupler socket, 1/4" Hex dr x 1/4" Square adapter, Bit adapter - 5.3" length, T-Handle bit driver, 60 Tooth ratcheting screwdriver with 12-bit storage holder inside of the handle and stubby screwdriver.