Bosch PS11-102 12-Volt Lithium-Ion Max 3/8-Inch Right Angle Drill/Driver Kit with (1) High Capacity Battery and Charger A 12V motor provides 1,300 RPM as well as 115 in-lbs. max torque 5-position pivoting head articulates from 90-degrees to 180-degrees, making it perfect for working in tight areas 3/8-Inch auto lock chuck for simple bit replacements and a variety of applications Variable-speed trigger for perfect speed regulation.Chuck design:Keyless Motor brake for exact serial screw driving