NORTON MS42 Slip Stone NORTON MS42 Slip Stone impart the finest, most uniform finishes when deburring, These fast-acting slips hold their shape and are long lasting. Norton carving tool slips are smaller than round edge slips, and are required for sharpening.   Features:  Aluminum oxide abrasive produce a strong, keen, long-lasting edge and are the choice for the best blend of cut rate and finish, Fine if preferred for producing sharper than average edges on woodworking tools, gouges, reamers, taps, auger bits and twist drills, The use of oil with sharpening stones enhance the sharpening action and minimize the clogging of the stone’s surface, Norton Sharpening Stones have been the world leader for over 150 years, 2 ¼” X 7/8″ X 3/16″