Makita 9557NB2 4-1/2" Angle Grinder, with AC/DC Switch (2 Pack) 7.5 AMP motor delivers 10,000 RPM for high output power Compact design with small 2-1/2" diameter barrel and weighs only 4.5 lbs. for added comfort Protective zig-zig varnish seals the armature from dust and debris for longer tool life Labyrinth construction seals and protects the drive gear from debris Slide switch is located on side of the motor housing that can be re-positioned every 90Degree