Modname ckeditor =Product Specification: Material: diamondColor: as the picture showsDiameter: 3mm/5mm/6mm/8mm/10mm/12mm/16mm/18mm/20mm/30mm/40mm/50mm/60mm/70mmQuantity: 14pcs (14 sizes for one set)This product uses advanced natural diamond material, with special improved coagulation treatment from the electroplating sand suction hole neat, smooth, no broken edges, etc. It is an efficient design, a mounting hole of choice. This section holes optimal glass holes, tiles can be opened, but only open a few holes in the hole, please add water, it will prolong the service lifeIt is installed on a professional drill or electric drill, bench drill. Rpm 800-1000 rpm or so, you need to add water cooling holes during operation. Application: apply high-speed glass, plastic film, wood and other products to the working holes. Package Included:14pcs x Diamond Hole SawNote:Please allow 1-5mm errors due to manual measurementItem color displayed on photos may be showing slightly different on computer monitor since self-payment monitors are not calibrated1) We accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow.2) payment must be made within 3 days of placing the order.3) if you are unable to check out immediately after the listing ends, please wait a few minutes and try again, payments must be completed within 3 days. Shipping1.