Topcon's Holder 6 laser receiver bracket works with LS-80A, LS-80B, LS-80G, LS-80L, and LS-B10 laser receivers. Holder 6 features a static thread that allows you to clamp to wide surfaces without the clamp's thread hanging out the side of the clamp in harm's way. Holder also features a lightweight, new design for extra strength, and built-in bubble vial.