100 percent new and high quality. Diamond hole saw tile cutting. Simply mounted on hand drill can be used, need to add coolant when drilling, drilling force should be playful, especially when at the beginning of the drill and to drill through. After notching easy decoration, chip easily, no distortion, good stability. Apply to ordinary glass tile openings, rounded beads, etc., mainly used for glass openings. Product name: Diamond hole saw Material: metal Color: Silver diameter: . 20mm or 0.78 inch , 26mm or 1 inch , 30mm or 1.18 inch , 35mm or 1.37 inch , 42mm or 1.65 inch Blade length: . 3mm or 0.11 inch Length: 50-50mm or 1.96 inch -2.16 inch Shank Diameter: . 7-8mm or 0.27 inch -0.31 inch Quantity: 5pcs Weight: 146g Package Contents: 1x 20mm with 7mm dia. Hole Saw Drill 1x 26mm with 7mm dia. Hole Saw Drill 1x 30mm with 7mm dia. Hole Saw Drill 1x 35mm with 7mm dia. Hole Saw Drill 1x 42mm with 8mm dia. Hole Saw Drill Only the above package content, other products are not included. Note: Light 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.