Features 1. 【MULTI-PURPOSE】: A professionally manufactured polishing disc, used with a special adhesive, which is widely used for rough polishing, smooth grinding, fine grinding, polishing, material processing, etc. 2. 【FLEXIBLE】: 50, 100, 300, 500, 800, 1500, 3000# particle sizes are available for selection, diameter: 100mm / 4", thickness: 4mm, complete accessories and sufficient quantities to meet different needs. 3. 【USE】: Standard specifications, the water grinding disc has smooth lines, easy to hold safely in the hand, ergonomically designed, and the polishing disc can be easily installed and quickly disassembled. 4. 【APPLICATION】: With strong practicability, these diamond polishing pads are very suitable for the processing of stone, glass, ceramics, crystal, ceramic stone, concrete, granite, marble, concrete, etc., or the renovation of artificial stone floors and stairs. 5. 【HIGH QUALITY】: Using diamond as abrasive, combined with composite material, polishing water abrasive sheet has strong grinding force, no color left after polishing, high smoothness, fast polishing, good flatness, and supports long-term grinding operations. Description: These grinding discs uses diamond as abrasion and combined with composite material. There is sticky cloth on the back which can stick on milling machine. They are mainly used for process, repair and renovation on stones, glasses, floor tile, marble, concrete, cement, etc. With strong grinding force, good flexibility, durability, they are ideal stone grinding tools and stones will have a good glossiness and smoothness after polishing. Specifications: Materiel: Diamond + resin Diameter: 100mm / 3.93" Thickness: 4mm / 0.15" Granularity: 50#+100#+300#+500#+800#+1500#+3000# Weight: 225g(approx.) Package Includes: 1 Set(7pcs) x Grinding Discs Note: 1, Please add water when you operate. 2, Please allow 1-m error due to manual measurement. Thanks for your understanding. 3, Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List