The MK-303 Professional 6" saw blade manufactured by MK Diamond Products is a professional grade continuous rim blade for lapidary materials. (Diameter of blade 6" or 152mm; rim width is .032; arbor size is 1/2"; part #153630). The Professional series produces smoother cuts and is used for rare and valuable materials when waste must be held to a minimum and speed of cut is essential. These blades will cut faster and last longer than ordinary notched-rim or plated-diamond blades. Made in the U.S.A. Discount of 20% will be applied at the SHOPPING CART. FOB Torrance, CA or Powell, WY