Specification: Exhaust: Rear Material: Stone iron + Plastic Color: Multi Colors Speed: 25000rpm Air inlet: 1/4" Air consumption: 4CFM Collet Size: 1/4", 1/8" Operating pressure: 90PSI (6.2Bar) Features: ✔ Compact size, lightweight and portable ✔ 15Pcs in one set, complete kit, easy to operate ✔ Can be stored into the box for transporting easily ✔ Designed for debarring, polishing and grinding,etc ✔ Suitable for a variety of operation of machining process. ✔ Comfortable handle with precision switch adjustment, long-term use without fatigue Package included: 1x Air Die Grinder 2 X Spanner 1 X Storage Box 2 x Collet (6mm, 3mm) 10 x Mounted Grinding Stones 1 x User Manual (Product structural explanation)