Description: Material: This Bearing Stock Roller is made of aluminum alloy material, making it sturdy and long term using.Adjustable for Various Board Thicknesses: The Single Wheel Bearing Stock Roller features a double wheel inclined feed, allowing you to adjust the roller height according to the thickness of the wood You can freely adjust the tightness level, making it adaptable to various board thicknesses.Design: The Table Saw Feeding Guide Roller design effectively prevents wood from falling off or getting damaged during feeding. This thoughtful design ensures safe and security during use.Enhanced Friction and Stability: The double pressure wheel increases friction, providing good shock absorption effects. It ensures that the wooden board does not deviate easily, while its anti shock double rollers and double sliders provide stable operation without shaking, ensuring smooth wood advancement without obstruction.Compatibility with Various Tracks: Comes with two types of sliders that are compatible with various tracks, equipped with 4 screws and 4 groove nuts which can be used on table saws, band saws, inverted engraving machines etc. Specification: Product Size:?13cmx7cm/5.12inchx2.76inchPackage Size:?19.5cmx14cmx5cm/7.68inchx5.51inchx1.97inch Package Includes: 1 Unidirectional Left Wheel Pressure Device1 Unidirectional Right Wheel Pressure Device4 Screws4 Groove Nuts Note: Please allow slightly errors 1-2cm differences due to manual measurement.