Description:High quality and exquisite workmanship make it high in hardness. Wear resistance and durability allow you to use it for a long time.Fully polished treatment makes it very rust-proof and smooth. And the multifunctional feature makes it have a wide range of use.Made of hard alloy material, it is very durable to use.The length of the storage box is 11cm, the width is 5.8cm and the height is 1.2cm.It is a professional glass and tile drill bit that can provide accurate drilling on tiles, marble, thin iron plates, mirrors and glass. Remember to add water or coolant when drilling.Item Name: Triangle Drill BitMaterial: Hard AlloyColor: Silver ColorFeatures: Sturdy, Universal, Multifunctional1: 3mm, 4mm, 5mm, 6mm, 7mm, 2: 5mm, 6mm, 8mm, 10mm, 12mm, 3: 6mm, 6mm, 8mm, 10mm, 12mm, 4: 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 5: 5mm, 6mm, 6mm, 8mm, 10mm, 12mmSize Details: Box Size: 11cm x 5.8cm x 1.2cm/4.33" x 2.28" x 0.47" (Approx.)3mm: Total Length: 7cm/2.76", Drill Bit Head: 0.3cm/0.12" (Approx.)4mm: Total Length: 7cm/2.76", Drill Bit Head: 0.4cm/0.16" (Approx.)5mm: Total Length: 7.6cm/2.99", Drill Bit Head: 0.5cm/0.2" (Approx.)6mm: Total Length: 7.7cm/3.03", Drill Bit Head: 0.6cm/0.24" (Approx.)7mm: Total Length: 8cm/3.15", Drill Bit Head: 0.7cm/0.28" (Approx.)8mm: Total Length: 8cm/3.15", Drill Bit Head: 0.8cm/0.31" (Approx.)10mm: Total Length: 8.3cm/3.27", Drill Bit Head: 1cm/0.39" (Approx.)12mm: Total Length: 8.3cm/3.27", Drill Bit Head: 1.2cm/0.47" (Approx.)Shank Diameter: 0.625cm/0.25" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1: 5 x Triangle Drill Bits (3mm, 4mm, 5mm, 6mm, 7mm)or2: 5 x Triangle Drill Bits (5mm, 6mm, 8mm, 10mm, 12mm)or3: 5 x Triangle Drill Bits (2Pcs 6mm, 8mm, 10mm, 12mm)or4: 6 x Triangle Drill Bits (4mm, 5mm, 6mm, 8mm, 10mm, 12mm)or5: 6 x Triangle Drill Bits (5mm, 2Pcs 6mm, 8mm, 10mm, 12mm)