Black and Decker MS550/MS600/MS800B Sander Replacement Pad Tip # 90558534 This part is compatible with models including; MS800B TYPE 1 This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including; 583010-00 Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Black & Decker This tip pad (part number 90558534) is for sanders Follow the instructions in your owner's manual when installing this part