8.5A, 1/2 ", 2 Speed, Hammer Drill, For High Torque & High Speed Drilling Capabilities, Auxiliary Handle With Built-In Depth Gauge Securely Locks Into Place & Provides Consistent Drilling Depth, Integral Slip Clutch Allows More User Security By Disengaging The Output Shaft If The Bit Gets Into A Bind Situation, Securely Clamping 1/2" Three Jaw Chuck For Rugged Hammer Drilling Applications, Dual Mode Selector Converts From Rotation Only To Hammer Drill Mode.