Watch Movement Clamp Specifications: Material: Chrome-Vanadium Steel Color: Shown As Pictures Size: Approx. 38 * 34 * 20mm / 1.5 * 1.34 * 0.79 (L), 26 * 24 * 20mm / 1.02 * 0.94 * 0.79inch (S) Weight: 65g Type: Watch Tools & Repair Kits Function: Fix Movement Package List: 2 * Movement Holder (S, L) Watch Movement Clamp Watch Movement Clamp The pot metal bodies are quite clean little castings and have pressed-in bushings which appear to have been installed nice and straight. The thread is smooth. Bodies are double-sided giving a wide range of movement sizes that can be held by this pair of holders. Watch Movement Clamp They will hold everything from a pocket watch movement to a very tiny ladies movement. If you are looking for a quality movement holder , this is it. Watch Movement Clamp Firmly holds movements of all makes and sizes. These movement holders make amateur level watch repair much easier .