Pack of 3, 4″ Long 400 GRIT Engine Cylinder Hone Replacement Stones 400 GRIT Use with our PMD Products $14.99 Cylinder hone available on eBay (search our store) or any 3 arm hones that have a 5/8″ Wide Stones (fits OEM 25051, 27029, KD brand) Replacement stone holder is 5/8″ wide with bonded stone 1/2″ wide Aluminum oxide stones bonded to aluminum stone holder Can use with other engine cylinder hones with 5/8″ stone mounts Includes three stones Stone w/ holder dimensions: 4″ L x 5/8″ W x 3/4″ H Shipping determined on the shipping tab above, will combine orders, will ship international See our auctions for Flex-Hone Honing Tools, all sizes and grits, our other 3 Arm honing stones in grits of 80, 100, 240, 320, 600