The Bosch GOP12V-28N 12 V Max Starlock® Oscillating Multi-Tool features the Starlock® next-generation 3-D tool-accessory interface. This cupped and contoured 3-D tool-accessory connection delivers greater torque transfer. The efficient 12 V Max EC Brushless motor delivers a top speed of up to 20,000 oscillations per minute, with great runtime. The tool has a 2.8° oscillating arc for outstanding productivity.