A precise-fit solution for your NPT Tap needs. 3D printed but strong. Just pour your epoxy within, let it cure, and you have a tap holder for years of use. *Do note: Epoxy NOT included. With a perky dog bone handle, you can hold and turn you tap with ease. Comes in various sizes: 2x 3/4" NPT 15.40mm (square side width) 2x 1/2" NPT 13.77mm (square side width) 1x 3/8" NPT 11.20mm (square side width) 1x 1/4" NPT 8.20mm (square side width) 1x 1/8" NPT 6.17mm (square side width) For custom sizes, contact use via email at contact@reganmade3DP.com or you could view our website at reganmade.shop.com for more designs.