Rockwell Sonicrafter F30 3.5 Amp Oscillating Tool with 30 Accessories and Carry Bag, The Sonicrafter Hyperlock. Tool-Free Blade/ accessory holding system technology is unmatched 1-ton of holding force, which means blades and attachments never slip. The Universal Fit System works with all major brands of accessories. No need to wonder if the accessory will fit. It will! Variable speed selection adjusts to the rate of oscillating best suited for cutting everything from plastic to tile to metal. Rockwell Oscillating Tools withstand the highest stall force in the industry. Push it as hard as you want! The blade oscillation angle is set at 4 for the perfect combination of fast cutting and easy control. FEATURES: Universal Fit System holds all major brands of blades >Universal Fit System holds all major brands of blades >Variable Oscillation speed, 11, 000 - 20, 000 opm >Powerful 3.5 amp motor maintains speed of cut under load >Dual oscillation angle 4 degrees. This item replaces: RK5131K & RK5121.