6pcs Diamond Drill Bit Sets Marble Granite Stone Ceramic Tile Core Hole Saws

Features:Construction - project use heavy duty 1. Different sizes meets your different requirement- Total 6 different sizes: 6/14/20/30/40/50mm, Can be used with a standard electric drill.2. Feature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges.3. Suitable for drilling ceramic tile, marble, granite, concrete and other hard surfaces, for most common standard electric drillers.4. Good choice - This diamond drill bits set is a great gift for any DIY lover.5. Please add lubricants or water frequently to avoid sparks while using this product, can also enhance the working life by doing this. Specification:Name: DiamondDiameter: 6/14/20/30/35/50mmSize: Shank Diameter*Shank Length*Body Length(1) 9.5mm*25mm*59mm(2) 9.5mm*25mm*58mm(3) 9.5mm*25mm*58mm(4) 9.5mm*25mm*58mm(5) 9.5mm*25mm*56mm(6) 6mm*30mm*40mmFunction: Quick openingFeatures: perforated fast, durable Packing Included:6 x Marble hole opener