Linear Rail Shaft Supports are commonly used in CNC and robotics; these are designed to securely hold a precision linear rail / metal rod in place as a part of a motion platform or other mechanical device. The rod is held tightly in place within the support using a large set screw while the base of the support has two M5 compatible mounting holes. The support places the rod 20mm above the mounting surface and allows plenty of clearance for linear bearings and other components. Don’t for get to pick up some M5 Mounting Hardware as well!