1/2" x 1/4" SK-5 90° Countersink Carbide Burr, Double Cut

Walter's 01V burrs are the heavy-duty end of the carbide burr range: solid tungsten carbide heads on a 1/4" shank, brazed with a high-strength joint that is built to stop the head snapping off the shank under load. Double cut means two sets of flutes crossing each other, which breaks the swarf into small chips instead of long curls — you get more control, a finer finish and far less grabbing than a single cut burr, which is why it is the cut most shops run on steel and stainless. Walter grinds these for concentricity and balance, so they run true without the vibration that chatters a finish and shortens tool life. This is the SK-5: a 1/2" 90° countersink head with a 1/4" length of cut on a 1/4" shank. Acute angles and countersinking. Specifications: Head style: SK-5 — 90° Countersink Burr diameter: 1/2" Length of cut: 1/4" Shank diameter: 1/4" Cut: Double Cut Material: Tungsten Carbide Maximum speed: 50,000 RPM Part number: Walter 01V068 Country of origin: China Sold as: Each, minimum 2 Features: Solid tungsten carbide head High-strength brazed joint, built to resist breakage Ground for concentricity and balance, so it runs without vibration Flute geometry clears chips from tip to base Applications: Deburring and edge breaking after machining Weld dressing and blending Die and mould work Opening and shaping holes and slots For use on: Carbon Steel Stainless Steel Hardened Steel (45–60 Rc) Nickel Chrome Steel Weldments Cast Iron Titanium Inconel Brass Bronze Fiberglass Hard Rubber Plastics Runs in: Die Grinder Air Grinder