Sink Faucet Knockout Set FK 8000 1 set- 8 molds Rubber plug forms size: 4 x 1 3/8"(2.54cm) diameter x 2" tall (5 cm) approximately, 4 x 2 3/8"(5.08 cm) Big End diameter and 1 3/8" small end x 2" tall Durable polyurethane rubber faucet forms for concrete/cement counter top faucet knockouts. Faucet Forms cast a 1 3/8" diameter void in your concrete countertop for easy installation of faucet fixtures, control valves, and dishwasher vents. Self sealing, reusable for multiple concrete castings and tapered for easy removal. Leaves a 1- 3/8" void and 2 3/8" void for mounting hardware. To see our other items please visit GlobMarble Store We manufacture all of our own products and have an unlimited supply. If you need more, let us know, we will get right back to you with pricing. We do not ship or deliver orders on Saturday or Sunday ATTENTION INTERNATIONAL BUYERS ALL TAXES, DUTIES AND LOCAL FEES AT THE DESTINATION COUNTRY WILL BE PAID BY BUYER. OUR SHIPPING COST INCLUDE DELIVERY TO A DESTINATION ADDRESS ONLY. ALL GLOBMARBLE PRODUCTS ARE SHIPPED FROM THE UNITED STATES