Description: Inner Diameter: 20mm/0.8". Heavy-duty and high quality. High precision, low friction and smooth move. Comes with a screwdriver for easy locking. Wide application, used in 3D printers, CNC machines and other linear motion applications. Specification: Size (L x W x H): Approx. 50mm x 50mm x 39mm Package Includes: 1 Piece Linear Motion Sliding Block 1 Piece Screwdriver
