Description Type-A 22000PRM: Parameter Information: Material: Stainless Steel Air Inlet Size: 1/4 Inch No-load Speed: 22000 rpm Air Consumption: 6 cfm Air Pressure: 90 Psi Package Include: 1 x Air Die Grinder 2 x Wrench 1 x 3mm Chuck 1 x 6mm Chuck 5 x 3mm Shank Grinding Heads 5 x 6mm Shank Grinding Heads 1 x 1/4in Interface Quick Connect 1 x Carry Case Type-B 22000PRM: Parameter Information: Material: Stainless Steel Air Inlet Size: 1/4 Inch Air Consumption: 4 cfm Package Include: 1 x Pneumatic Grinder Machine 2 x Small Wrench 1 x 3mm Chuck 1 x 6mm Chuck 1 x User Manual Type-C 25000PRM: Parameter Information: Material: Stainless Steel Air Inlet Size: 1/4 Inch Air Consumption: 4 cfm Package Include: 1 x Pneumatic Engraving Polished Machine 2 x Small Wrench 1 x 3mm Chuck 1 x 6mm Chuck 1 x User Manual Type-D 25000PRM: Parameter Information: Material: Stainless Steel Air Inlet Size: 1/4 Inch Air Consumption: 4 cfm Package Include: 1 x Extended Shank Pneumatic Grinding Machine 2 x Small Wrench 1 x 3mm Chuck 1 x 6mm Chuck 1 x User Manual Type-E 25000PRM: Parameter Information: Material: Stainless Steel Air Inlet Size: 1/4 Inch Air Consumption: 4 CFM Package Include: 1 x Pneumatic Engraving Polished Machine 2 x Small Wrench 1 x 3mm Chuck 1 x 6mm Chuck 1 x User Manual Type-F 22000PRM Parameter Information: Type: Straight Shank Pneumatic Drill Material: Metal + Stainless Steel Chuck Size: 1.5-10(mm) Recommended Tracheal Diameter: 3/8" Package Include: 1 x Straight Shank Pneumatic Drill 1 x Quick Connector 1 x Chuck Wrench