Precision carbon steel drill chuck Precise and durable, with stronger force. Three-jaw chuck for firm clamping. The clamping range is 0.5-6.5mm. High precision double bearing tailstock Stainless steel structure, strong and durable. Stable performance, double bearing design, improve working accuracy. Metal saw blade slot Sturdy. Safe operation. Rocker switch heat dissipation design The operation is simple, and the multi-hole heat dissipation can improve the life of the motor. 7 Speed Adjustment 7-speed speed control to meet the needs of various situations. Features: 1. Specially designed for the home DIY enthusiasts, small and portable size with strong power. 2. Stainless steel dustproof cover with super convective cooling hole. 3. The welding line is covered with a full heat shrinkable tube. 4. With 7 levels of power adapter enable you to adjust the rotating speed easily to meet different cutting speed. 5. High quality aluminum alloy base and pure steel structure drill chuck. 6. Super large torque ball bearing motor, maximum rotating speed up to 7000RPM providing ultra strong cutting power with low noise, you can use it at home. Specifications: Main material: Aluminum alloy Color: Blue Voltage Input: AC 230V 50/60Hz Voltage Output: DC 12-24V Rated power: 150W Rated speed: 4000-7000RPM Power: 7 level of adjustable speed Max Processing length: 145mm / 5.7in Max Processing diameter: 50mm / 2.0in Chuck clamping range: 0.6-6.5mm / 0.02-0.26in Swing diameter: max 50mm / 2.0in Grip length: max 140mm / 5.51in Matching saw blade diameter: max 50mm / 2.0in Machine size: 345*60*80mm / 13.6* 2.36 * 3.15in