RUKO Reamers & Countersinks Countersink 616423 - RUKO 102771P, The Ruko 102771P Countersink features an 8.3 mm high-speed steel design with a triangular shank, ensuring durability and precise performance in machining tools. Manufactured by Ruko, this countersink bit is ideal for creating clean and accurate conical holes for screws or fasteners. It is suitable for professional machining applications, providing efficient material removal and smooth finishes. RUKO 102771P ULTIMATECUT Countersink 8.3mm HSS Triangular Shank
