4-1/2" Angle Grinder - MAKITA Labyrinth construction seals motor and bearings from contamination Zig-Zag varnish on armature and powder coating on field to protect motor from abrasion Engineered for durability double protection against dust, high quality motor and machined gears Ergonomic soft grip for vibration absorption and comfortable operation Slim housing design for easy handling and manoeuvrability Thumb switch conveniently located for operator comfort INCLUDES 4-1/2" Depressed Centre Wheel (D-20781), Lock Nut Wrench (782424-9), Lock Nut (224568-4), Inner Flange (224399-1) , Wheel Cover(123098-1), Side Handle (153504-2), Plastic Carrying Case (824736-5) SPECIFICATIONS Grinding Wheel: 4-1/2" (115 mm) Sanding Disc: 4-1/2" (115 mm) Wire Cup Brush: 3-1/2" (90 mm) Spindle Thread: 5/8"- 11 UNC No Load Speed: 11,000 RPM AMPS (120V): 6. 0 Vibration Level : 7.