Makita E-01650 Impact XPS® Impact Bit SetPERFORMANCE : Designed exclusively for High Torque Impact Drivers DURABILITY : Bits last up to 100X longer than standard impact bits DESIGN : Magnetic Nutsetters feature a lobular design to reduce rounding of hex fasteners INNOVATION : Insert Bit Holder features a two piece design; Socket Adapter features chamfered edges INCLUDES : (2) 1 3 4" Magnetic Nutsetters, (1) 2 3 8" Insert Bit Holder, (31) 1" Insert Bits, (10) 2" Power Bits, (1) 1 4" Socket