Features Reinforced Bit Design: The reinforced cross spear head minimizes cracking, providing stable and accurate drilling for various materials Versatile Applications: Ideal for drilling through glass, ceramic tile, wood, porcelain, brick wall, marble, and thin iron plates, making it a must-have in your toolkit Quick Connection Hex Shank: The 1/4in hex shank allows for a rapid and secure attachment to electric hand drills and other tools, enhancing your efficiency Durable Carbide Material: Crafted from high-quality cemented carbide, these bits are designed for long-lasting performance and reliability, ensuring you get the job done Comprehensive Set of 5: This set includes 5 tile drilling bits in different sizes, offering flexibility and convenience for various drilling tasks and projects Features: 1、Reinforced Bit: Reinforced cross spear head is not easy to crack, which also ensures stable and accurate drilling. 2、Practical Uses: Suits for drilling glass, ceramic tile, wood, porcelain, brick wall, marble, thin iron plate, etc. 3、With Hex Shank: 1/4in hex shank enables quick and firm connection on electric hand drill and other electric tools. 4、Great Material: Forged with cemented carbide, the proof drilling bit is very for long use. 5、5Pcs in 1 Set: Including 5pcs tile drilling bit in different sizes, so you can flexibly elect and use it as you need. Specification: Item Type: Drill Bit Material: Cemented Carbide Application: Used for drilling tiles, bricks, glass, plastics and wood. Aperture: Approx. 6mm / 0.24in, 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in, 12mm / 0.47in (there is a ±1mm error in manual measurement). Drill Bit Style: Cross Spearhead Shank Type: Hex shank. Shank Size: 1/4in Adaptation Equipment: Electric hand drill, etc. Package List: 5 x Drill Bit 1 x Plastic Box Note: Please try to keep the drill bit vertical when using it, and keep the drill bit cool with flowing cold water; do not use it for hard tiles. Package List 5 x Drill Bit 1 x Plastic Box