Spot-Weld Cutter Welding Drill Bit Tool Set High-Speed Steel Cobalt TitaniumProduct selling point: EFFORTLESSLY REMOVE SPOT WELDS: Use the ABN Spot Weld Cutter Drill Bit 3-Piece Set High-Speed Steel HSS Cobalt Titanium Coated Welding Remover Bits Tool Kit to drill into harder steel materials and stainless steel; Length of each bit is 1-3/4-inches (45mm); Sizes include 1/4-inch (6.5mm), 5/16-inch (8mm), and 3/8-inch (10mm); Each drill bit has permanently etched size markings for quick identification SPECIALLY DESIGNED: Unlike pilot bits that drill through both surfaces, these bits are easy to control while cutting without penetrating the lower surface; Non-slip special centering nib design with flat shaft for sure grip BUILT TO LAST: Titanium coating offers a smooth drilling experience that prevents dulling from overheating for extended performance; We recommend using cutting lubricant and a spot weld chisel to extend the life of these drill bits (lubricant and chisel not included) EASY STORAGE: Heavy-duty 3.9 x 3 x 1.1 inch (9.9cm x 7.6cm x 2.8cm) aluminum carrying case with internal foam tray for easy transportation, safe storage, and quick organization; Foam tray includes printed size markings for simple identification PACKAGE CONTENTS: Package includes (3) bits and (1) storage case for your convenience; Length 1-3/4-inch (45mm); Sizes: 1/4-inch (6.5mm), 5/16-inch (8mm), and 3/8-inch (10mm) Specification: Material: High-Speed Steel Size: 45mm Quantity: 3PcsProduct include:1 Set Welding Drill