Metal front cap. Safety lever throttle - Lever throttle for feathering control. For automotive and industrial maintenance applications. Durable and long-lasting, with all ball bearings. Ideal for grinding, chamfering, deburring, polishing ,and engraving. The composite handle reduces vibration. Excellent tool for control and maneuverability. Compact and lightweight. The motor operates at a powerful high free speed of 20000rpm for a quick and efficient sanding finish. Suitable for multiple applications such as welding, cutting, and polishing.