Designed to hold PVC Drainage/Sewer pipes securely when drilling or cutting. Available in 3, 4, or 6-inch sizes. Designed for PVC (Drainage, not pressure), it securely holds pipes in place with rubber pads to prevent slipping (purchase at your local hardware store). Useful for plumbing and hydroponic projects. I used an IR laser (xtool F1) to make the lettering in the Grey PLA plastic. Not all colors will give similar results! NOTE: All of these designs, programs and such are released under CC BY-NC 4.0 However, **if you want to sell these locally (at your brick and mortar store, craft fairs, farmers market, door-to-door, et.c) GO FOR IT! **And no need to give us attribution. But please don't sell online as we do that via our store. Contact us with any questions.