uxcell LM4UU Linear Ball Bearings 4mm Bore 8mm OD 12mm Length for CNC Machine 3D Printer 4pcs Size:4mm Screws included bHow to Install

Screws included bHow to Install a Piano Hinge Cut the piano hinge to length with a hacksaw and file down any rough edges

3/4" Coating Gold Oxide Gold Oxide Accusize 1/2" S &D Shank Drill Bits

Transparent Duct Tape

Material and Specification: Made of high quality zinc alloy

uxcell LM4UU Linear Ball Bearings 4mm Bore 8mm OD 12mm Length for CNC Machine 3D Printer 4pcs Size:4mm Screws included bHow to Installuxcell LM4UU Linear Ball Bearings 4mm Bore 8mm OD 12mm Length for CNC Machine 3D Printer 4pcs Linear motion bearings provide freedom of movement in a single direction. Often used in conjunction with cylindrical shaft or rail. The steel ball is in point contact with the shaft and rotates with very little frictional resistance, so as to obtain smooth movement with high precision. Linear Ball Bearing Motion Slide Units Grease may be applied prior to use