Quick view T-GR10838 Knife Edge Cratex® Wheels - Medium - 5/8" T-GR10838 Knife Edge Cratex® Wheels - Medium - 5/8" Supplied with 1/16" center hole and can be used with mandrels with 3/32" or 1/8" shank in power tools with safe maximum speed of 25,000 RPM... MSRP: Was: Now: $70.60 Add to Cart