Welcome to Winning Choice. Please take some time and visit our Store 15 Piece Air Die Grinder Kit 1/4" 1/8" Rotary Air Compressor Tool Kit Carry Case Professional Air Grinder Kit -- High quality air die grinder for grinding, polishing, tire grinding, smoothing, rust removal, etc. Comes with grinder, spanner, 3mm(1/8") Chuck/ 6mm(1/4") Chuck and Grinding Head, practical and convenient grinder kit giving complete flexibility for most grinding and polishing needs Ergonomic Design Labor-Saving -- Air die grinder tool with comfortable ergonomic design, small size, light weight, easy to use with one hand, suitable for hand-held homework. Quick chuck design, chuck can be quickly converted between 3mm-6mm(1/4" 1/8") Multi-proposes Easily Operated -- Air die grinder kit widely used in all kinds of mold, hardware products, glass, stone, handicrafts, ornaments and industry need blank shaping, cutting, grinding, finishing, polishing, and internal processing. Supplied with spanner and adapter for easily operate, quick to assemble and unassembled High-speed Precision Safety -- This Air Die Grinder is lightweight aluminum alloy housing, sturdy and durable, long service life. Quality bearings for smooth and powerful operation, high accuracy. High-speed rotation, can adapt to high-speed precision machining. Lock-off throttle to prevent accidental start up, safe to use Kit Includes: 1 Mini Die Grinder 2 Collets (1/4" and 1/8") 5 Mounted Stones 1/4" Shanks 5 Mounted Stones 1/8" Shanks 2 Pcs Spanner 1 Blow Mold Case Speed: 24000 RPM Collar Size: 1/4" Air Inlet: 1/4" NPT Hose Size: 3/8" ID Air Pressure: 90 PSI Air Consumption: 8 CFM