ITEM NAME:HGH20 20mm Flange Linear Guide Rail Sliding Block Slides Replacement Parts, Made Description: Made of high grade ball bearing steel, strong and durable. Professional and technical, simple and easy to use. Small size, light weight, especially for small equipment. High preicsion for quiet operation. Fit for: Semiconductor manufacturing equipment, printed circuit board IC assembly equipment, machine arm. Specification: Size(LxW): approx. 77.5x63mm/3.05x2.48inch Mounting Hole Distance(LxW): 40x53mm/1.57x2.09inch Mounting Screw: M6 Package Includes: 1 Piece HGH20 Flange Sliding Block SKU: DMO0009416779005354.1 Piece HGH20 Flange Sliding Block. Professional and technical, simple and easy to use. Made of high grade ball bearing steel, strong and durable. SKU: DMO0009416779005354. High preicsion for quiet operation.