Are you lokking for a set of drill? This item is well made of premium material for durable and practical use. With precise design and high quality, it is perfect for drilling through numerous materials, including glass, mirrors, ceramics and other hard brittle materials like stucco._x000D__x000D_Feature_x000D__x000D_- Color: black._x000D_- Material: alloy._x000D_- Size: 1.2x1.2x8.5cm_x000D_- Cutting diameter: 4/5/6/8/10/12_x000D_- Useful length : 43/43/45/48/55/55_x000D_- Blade& 39;s length : 43/43/45/48/55/55mm_x000D_- Overall length : 76/76/77/80/83/86_x000D_- Size : 6/8/10/12/14/16_x000D_- Deepest depth : 43/43/45/48/55/55_x000D_- Angle : 45_x000D_- Length of chip tank :43/43/45/48/55/55_x000D_- Dia : 6.35mm_x000D_- Well made of premium material for durable and practical use._x000D_- Reinforced head that prevents bit cracking and provides a longer life._x000D_- Different style shaped drills can match your needs._x000D_- Sharpened edges for easy penetration in glass, mirrors, ceramics and other hard brittle materials like stucco._x000D_- Applicable to ordinary hand electric drill or bench drill.Packing list:6 x Ceramic Drill Bits