• Complete Set of Diamond Core Drill Bits: 5-pack includes sizes 3/16" (5mm), 1/4" x 2 (6mm), 5/16" (8mm), 3/8" (10mm). 10-pack includes sizes 3/16" (5mm), 1/4" (6mm), 5/16" (8mm), 3/8" (10mm),drill bit*4,ph2 bits*2.
• Long-Lasting: We have enhanced the durability of these drill bits by thickening the diamond cutting coating, ensuring prolonged usability and reducing the chances of them becoming unusable after a few grinding sessions. The solid hexagonal handle design prevents breakage from excessive torque.
• Fast Chip Removal: Our large-diameter chip removal design minimizes debris accumulation during drilling, addressing the issue of wax lubricant leading to debris buildup.
• Speed and Smooth Cutting: The increased thickness of the diamond coating at the tip ensures greater diamond exposure, enabling faster and more efficient cutting during use.
• Compatibility: The hexagonal shank design is compatible with most popular electric drills, power drills, and bench drills, adding convenience to your drilling tasks.