100% brand new and high qualityHigh Quality Material: Made of high quality diamond , stable, firm and durable.Product Dimension: approx. 55x90mm/2.17x3.54inches.Application: Good performance, convenient and practical, suitable for home and professional use.Lightweight Size: Portable and small size, easy to store and carry, bring you convenience.Diamond hand-rubbing block, diamond material, mainly for rapid polishing and processing of stone, also used for edge and surface polishing, used in granite, marble, concrete, glass polishing, etc.Material: DiamondColor: As the Picture ShowsType: 9, 10, 11, 12, 13Product Dimension: approx. 55x90mm/2.17x3.54inches Net Weight: 13g/0.03lbs 28g/0.06lbs 15g/0.03lbs 16g/0.04lbs 32g/0.07lbsPlease allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.1x Sandpaper Sanding Block"