Note: If you receive the package and you are not satisfied with the product, we will refund or resend the product, please do not open the dispute directly. Thank you for your understanding. Features:1. Light alloy head with stronger hardness, low resistance, high hardness, improve working efficiency.2. The triangular handle makes the mount stronger and non-slipping.3. The U-shaped spiral grooves are smooth and flat, and the drilling is smoother.4. Strong strength and wear resistance, can be installed in hand drill, electric drill, bench drill.5. Wide Application: Provides smooth and accurate drilling in ceramic tile, glass, brick wall, wood, etc. Note:1.The actual color may be slightly different from the picture due to different monitor and light effect. Please allow slight deviation due to manual measurement. Specification: Type: multi-function drill bit setMaterial: alloyTo:A: 10pcs: 6mmB: 5pcs: 6mm, 6mm, 8mm, 10mm, 12mmC: 4pcs: 6mm, 8mm, 10mm, 12mmD: 5pcs: 4mm, 5mm, 6mm, 8mm, 10mmE: 7pcs: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mmF: 5pcs: 12mmG: 5pcs: 10mmH: 5pcs: 8mmI: 5pcs: 6mm Package Included:1:10 x Drill Bits Selection2:5 x Drill Bits 3:4 x Drill Bits Selection4:5 x Drill Bits Selection 5:7 x Drill Bits