Compatible with SDS PLUS bits. Has increased power and durability by the redesign of the internal structure. Equipped with three operation modes, Rotation only, Hammering only, Rotation + hammering. Chuck type: Normal chuck High efficiency Torque limiter Variable speed by trigger Reverse switch Recessed lock-on button for continuous use Input Power 800W No Load Speed 0 1500min Impacts Per Minute 0 - 4500min (IPM) Max Drilling Diameter in Wood 32mm Max Drilling Diameter in Concrete 26mm Max Drilling Diameter in Steel 13mm Power Supply Cord 4m Max Output Power 550W