Feature:<br />-100% new and high quality.<br />-Diamond hole saw glass marble tile cutting.<br />-High quality diamond blade， durable.<br />-Simply mounted on the ordinary 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.<br />-Opening neat， smooth， no broken edges， Britain does not produce shock phenomenon.<br />-After notching easy decoration， chip easily， no distortion， good stability.<br />-Apply to ordinary glass tile openings， rounded beads， etc.， mainly used for glass openings.<br /><br />Specifications:<br />Product name: Diamond hole saw<br />Material: High-speed steel<br />Color: Silver<br />Blade diameter: Approx. 20mm/0.78&quot;，  26mm/1&quot;， 30mm/1.18&quot;， 35mm/1.37&quot;， 42mm/1.65&quot;<br />Blade length: Approx. 3mm/0.11&quot;<br />Length: 50-50mm/1.96&quot;-2.16&quot;<br />Shank Diameter: Approx. 7-8mm/0.27&quot;-0.31&quot;<br />Quantity: 5pcs<br />Weight: 146g<br /><br />Package Include:<br />1x 20mm with 7mm dia. shank<br />1x 26mm with 7mm dia. shank<br />1x 30mm with 7mm dia. shank<br />1x 35mm with 7mm dia. shank<br />1x 42mm with 8mm dia. shank