Mesee 5Pcs Cobalt Countersink Drill Bits with Bit Extension,1/4'' 3/8'' 1/2'' 5/8'' 3/4'' Countersink Bits 1/4" Hex Shank 82 Degree 5 Flute Counter Sinker Drill Bit Tool for Metal, Plastics, Wood

• Counter Sink Drill Bit Set - 5 SAE Size: 1/4'', 3/8'', 1/2'', 5/8'', 3/4''; Overall Length: 2"(50mm)
• HSSCO Countersink Drill Bits - Crafted from premium cobalt high-speed steel for exceptional durability and longevity, designed to withstand high temperatures.
• 82-Degree 5 Flute Countersink Bits - ensure a clean and accurate countersink, perfect for creating smooth, tapered holes that accommodate screw heads perfectly.
• 60mm Magnetic Bit Extension - built-in magnet to lock the countersink bits more tightly, and help you get additional length to flexibly access narrow spaces and deep holes.
• Universal 1/4-inch Hex Shank - Allows for quick change between various power drills, electric screwdriver and angle drill attachment for woodworking, home improvement, and all types of DIY enthusiasts.
• Wide Application - Perfect for clean chamfers & smooth screw seating, pre-drill a pilot hole for precision results every time, suitable for wood, plastic, metal(copper, aluminum) & composites (not stainless).

Mesee 5Pcs Cobalt Countersink Drill Bits with Bit Extension,1/4'' 3/8'' 1/2'' 5/8'' 3/4'' Countersink Bits 1/4" Hex Shank 82 Degree 5 Flute Counter Sinker Drill Bit Chamfer Tool for Metal, Plastics, Wood