
Premium Tungsten Steel Drill Bit Set for Porcelain, Glass, and Wood. Multi-Material Compatibility: Drills effectively into porcelain, glass, wood, metal, ceramic, brick, and concrete. Durable Alloy Construction: Made of hard alloy and tungsten carbide for high toughness and wear resistance. Deep Drilling Capability: Features an extended drill body and widened spiral chip removal groove. Versatile Size Range: Available in sizes from 4mm to 16mm to suit various drilling needs. OEM and Customization: Offers OEM services, label printing, and flexible customization options. Premium Packaging: Comes in a protective PVC box with carton outer packaging for safe shipping. Fast Delivery Options: Standard delivery in 20-30 days; customized orders in 35-45 days. Flexible Payment Terms: Accepts T/T, L/C, PayPal, D/P, Western Union, and small-amount payments.