The MK-303 Professional 10" diamond saw blade is a professional grade continuous rim blade for lapidary materials. A discount of 20% will be deducted at the SHOPPING CART! It produces smoother cuts and is used for cutting rare and valuable materials when waste must be kept to a minimum and speed of cut is essential.  The Professional series diamond blades last longer and will cut faster than ordinary notched-rim or plated-diamond blades. (Diameter of blade 10" or 154mm; rim width is .032; arbor size is 5/8"; part #153695). Made in the U.S.A. by MK Diamond Products, Torrance, CA