The Web Store +3 30mm 5 Rib Pulley 38272 $69.00 In stock Quantity: 1 Add to Bag Product Details This pulley fits all 30mm spindles with a 30mm OD (ER, R8, ISO-20). It will not fit the BT30 or 5C spindles. The pulley is a two step pulley. Large step 79mm, smaller step 45mm. It uses J type 5 rib belts. Save this product for later Favorite