EZARC 5PCS Countersink Drill bit Set for Hard Metal, Titanium Aluminum Nitride Coated with 1/4" Hex Shank, 82 Degree 5 Flutes Design, Storage Box

【Longer-Lasting AlTiN Coating】 Premium AlTiN coating provides extreme hardness, excellent heat resistance, and reduced friction – ensuring a long service life for this counter sink drill bit set. Perfect for precise metalworking. 【Optimized for Hard Metals】Specifically designed for stainless steel, alloy steel, and other hard materials. This metal countersink bits is engineered to handle tough metalworking tasks, though it may not provide the same surface finish quality when used on softer materials. 【5-Flute Design for Smooth Cuts】The 5-flute geometry minimizes vibration, distributes cutting forces evenly, and enables stable, smooth cuts with minimal burrs. Ideal as both a countersink tool and counter sink bit for hard metals. 【Countersinking & Deburring】Perfect for chamfering drill hole edges, deburring metal surfaces, and creating clean countersinks in pre-drilled holes. This trend countersink drill bit saving time and improving workflow efficiency. 【Universal Quick-Change Hex Shank】 The standard 1/4" hex shank fits drills and electric screwdrivers securely. Quick-change design saves time and ensures easy, precise use with countersink drill bit. Comes with a durable storage case for organized storage and jobsite convenience. 【Assorted Sizes & Technical Specifications】This countersink sets includes 5 different sizes of countersink drill bits, each with an 82° cutting angle and 5-flute design: 1/4" (6mm), 3/8" (10mm), 1/2" (13mm), 5/8" (16mm), and 3/4" (19mm). All bits feature a 1/4" (6.35mm) hex shank for universal compatibility.