Check the listing for details. Wheel set for knife making 2" x 72" Belt Grinder (MADE IN USA) Fast Shipping. Condition: New. Listed at 76.99 USD. BEWARE OF CHINESE/TURKISH/POLISH JUNK SPLATTERED ALL OVER EBAY, ASK US WHO THEY ARE IF YOU'RE UNSURE. THEY USE TERRIBLE MATERIALS & BEARINGS! NICE PICS, BAD WHEELS! WE SELL GENUINE DIKTATOR WHEELS, BUY WITH CONFIDENCE! In this set:* ONE crowned tracking wheel. The tracking wheel is 3" in diameter and 2.25" wide. The 3 bearings are removable so that they can be replaced when they wear out. The bearings have a 1/2" bore. This wheel is crowned, it does not have a sharp v. WE INCLUDE A 3/8" WIDE STANDOFF* TWO idler wheels. 2" diameter and 2.25" wide. The 3 bearings are included and have a 1/2" bore. WE INCLUDE 2X 3/8" WIDE STANDOFFS. * ONE crowned drive wheel. The drive wheel measures 4" in diameter and 2.25" in width. It has a 5/8" bore with a 3/16" keyway cut into it. 1/4-20 x 1/2" set screw is included. DISHED SIDE FACE. IF YOU NEED A DRIVE WHEEL WITH A 3/4", 19MM, 7/8" OR 24MM BORE PLEASE LEAVE A MESSAGE ON THE CHECKOUT PAGE & WE'LL SEND THAT OUT.Thanks for looking!