Modified operation-mode change lever allows switching between ‘Rotation’ and ‘Hammering’ modes without rotating the chuck. 3-mode operation: Rotation only Rotation with hammering Hammering only One-touch sliding chuck for quick and easy bit installation and removal. Variable speed control via trigger. Forward / reverse rotation function. Torque limiter for added safety and precision. Double insulation for enhanced durability. 40 different bit angle settings for versatile operation. Compact and lightweight design for improved handling. Depth stop for accurate drilling depth control.