uxcell LM6UU Round Flange Linear Ball Bearings, 6mm Bore Dia, 12mm OD, 19mm Length (Pack of 2) Size:6mm Works great with concrete stone

Works great with concrete stone wet polishers

PRE-PUNCHED HOLES Six 3/16inch pre-punched holes for easy mounting on a door

Thus the bigger head of the bolt will expand the metal sheath

Practical tools:These hammer head fastener nuts are durable and practical

electronic devices

uxcell LM6UU Round Flange Linear Ball Bearings, 6mm Bore Dia, 12mm OD, 19mm Length (Pack of 2) Size:6mm Works great with concrete stoneuxcell LM6UU Round Flange Linear Ball Bearings, 6mm Bore Dia, 12mm OD, 19mm Length (Pack of 2) 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