All are our standard 1" (2.5cm) long, 1/4" (6.3mm) hex shank bits. Phillips bits are NOT anti-cam. Square socket screws are in RVX’Xs, cabinets, other places. 1/8" square fits newer Remington butt plates. Mfg: Brownells SPECS: Allen Bit Set includes all ten X"X185X"X series bits listed in our MAGNA-TIP(R) chart. Phillips Bit Set includes #0, #1 and #2 Phillips Bits. Square Bit Set includes 1/16", 3/32", 1/8" and 9/64" Square Bits. X"XOther BitX"X Master Kit includes the Allen, Phillips and Square Bit
