<p>[Function]This Aluminum Master Base Plate is designed as a machine accessory, it's act as a backer-disc sit into the Grinding Machine and the top face for place grinding papers\/discs\/pads.</p> <p>[Application]This Master Base pad is suitable for the Grinding Polishing Machine.</p> <p>[Advantage]This Aluminum is Premium workmanship, accurate dimension, well made and plating, soften the edges avoid hurt hand and for comfortable hold.</p> <p>[Materials]Aluminum. KINDLY REMINDER that this Aluminum backer-disc is no diamond coating, it can't be used to grinding stone\/knife\/gem\/wood and all other items directly.</p> <p>[Applicability]Diamond coated flat lap disk grinding wheel can be installed on the aluminum . So if you want to sharpening the gemstone or steel knives, you need purchase a diamond disk( Not included, need to purchase separately), and a aluminum .</p> <p>Product Name:Aluminum Disc Master Base Lap Plate</p> <p>[Product SIZE]Diameter: 6 inch(150mm), Arbor Hole: 1\/2 INCH(12.7mm)</p> <p>All our diamond flat laps wheels have a 1\/2 inch arbor hole and are intended to be mechanically clamped to a .The of the aluminum plate is smooth and the concentricity is good.We recommend using the Aluminum for diamond coated flat lap disk.</p> <p>Note:Please make sure our product fits your equipment before you place the order.Thanks for your understanding!</p> <p>Material: Aluminum</p> <p>colour: Silver</p> <p>Package Contents:</p> <p>1 x Aluminum </p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>