Makita 9557NB-R 7.5 Amp 4-1/2 in. Slide Switch AC/DC Angle Grinder (Certified Refurbished) This Certified Refurbished product has been tested and certified to work and look like new, with minimal to no signs of wear, by a specialized third-party seller approved by Amazon. The product is backed by a minimum 90-day warranty, and may arrive in a generic brown or white box. Accessories may be generic and not directly from the manufacturer. Protective zig-zig varnish seals motor from contaminants by forming a barrier under rotation 7.5 Amp motor design for high output power in a more compact tool (only 4.5 lbs.) Thicker coil wires are wound more closely to reduce heat and energy loss All ball bearing design and metal gear housing for durability