The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. KSEIBI Double Row Segmented Diamond Cup Wheels are designed for grinding concrete and field stone. The double segment configuration allows for faster material removal. More choices helps you finish your cement project by KSEIBI Double Row Cup Wheel Add to Cart Turbo Cup Wheel Add to Cart Threaded Turbo Cup Wheel Add to Cart Threaded Diamond Holesaw Add to Cart Threaded Core Cutter Bits Add to Cart Customer Reviews 4.6 out of 5 stars 2,321 4.5 out of 5 stars 399 4.5 out of 5 stars 399 4.4 out of 5 stars 35 4.2 out of 5 stars 49 Price $18.28$18.28 $16.98$16.98 $22.48$22.48 $17.99$17.99 $44.82$44.82 Segment Type Double Row Supper Turbo Supper Turbo U-grooves Segmanted Applications Granite, marble, concrete Granite, marble, concrete Granite, marble, concrete Porcelain, Tile, Granite Concrete and Hard Masonry Main Features Ideal for beveling, smoothing Ideal for beveling, smoothing Ideal for beveling, smoothing Ideal for hole making Ideal for hole making Available Sizes 4~9 inch 5 sizes 4-1/2 inch 4-1/2 and 7 inch 1-1/4~4 Inch 18 sizes 1-1/2~12 inch 19 sizes Arbor Size 7/8 arbor 7/8 arbor 5/8"-11 thread arbor 5/8"-11 thread arbor 5/8-11~1-1/4"-7 threaded arbor TECHNICAL DATA Diameter 4 inch (105mm) Arbor 7/8" Blade Thickness 0.35" Application Can be used on a wide variety of concretes, medium granite, brick, block and stone, and cement rock leveling Tool Small angle grinders Type Double Row Diamond Grinding Wheel Maximum RPM 12,500 rpm Cut Type Aggressive grinding What is the difference between Double row and single row cup wheel KSEIBI 644030 Double Row KSEIBI 644050 Turbo Wheel KSEIBI 644136 Turbo Wheel Segment Type Double Row Segment Type Supper Turbo Segment Type Supper Turbo Applications Granite, marble, concrete products, masonry material, and all-natural stone. Applications Granite, marble, cured concrete, construction material. Applications Granite, marble, cured concrete, construction material. Features: Ideal for beveling, smoothing, and shaping with excellent performance. Features: Ideal for Smooth grinding, and finishing of construction material surface. Features: Ideal for Smooth grinding, and finishing of construction material surface. Blade Size 4 1/2 inch diameter with 7/8 arbor Blade Size 4 1/2 inch diameter with 7/8 arbor Blade Size 4 1/2 inch diameter with Threaded 5/8"-11 arbor What is the arbor size? The Grinding wheel arbor size is 7/8" and it's comes with extra 5/8" washer . Can use this cup wheel on wood? This disc is made for grinding all types of stone materials, we don't suggest you to grind wood with this wheel. Can I grind metal? This disc is made for grinding all types of stone materials, we don't suggest you to grind steel. Should this be used flat against the concrete surface,or at an angle? Can be used in two positions, depending on the work you need to do. Do I need any supportive tools? When you grind the stone surface dust will get out, we suggest you to ware your safety goggles and dust mask, you may also attach dust shroud with vacuum on your angle grinder to reduse the dust. For your Safety How to Use: Follow carefully the instructions given in the machine handbook.Never fit a diamond dish/cup wheel that is too loose or tight on the flange.Tighten only with the tool supplied with the machine.Ensure the wheel is properly gripped to prevent slippage, but do not tighten with excessive force. We recommend the use of the following personal protective equipment: Eye protection, Ear protection (ear sets), Hand protection (gloves), and Lung protection (dust mask, also called respirator). Important note: Never remove the protective machine guard, and ensure it is properly adjusted to deflect debris away from you. Ensure that no other person is at risk while working, especially near the machine.