Suggested Retail:$96.08. Sunex SX264K, 1/4 Inch Drive Mini Right Angle Air Die Grinder Kit with Speed Regulator, Safety Throttle, Ball Bearing Construction, and Storage Case, 20000 RPM. BUILT-IN SPEED REGULATOR: Regulated speed for better control. SAFETY THROTTLE LEVER: Maintain positive speed control. BALL BEARING CONSTRUCTION: Allows for a longer tool life. STORAGE CASE INCLUDED: Comes with a convenient, blow molded storage case. FREE SPEED: 20,000 RPM DRIVE SIZE: 1/4”. . 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.