The Ruko 102774P Countersink is a high-speed steel tool with a 10.4 mm triangular shank. Manufactured by Ruko, it is designed for precision machining applications. This countersink is ideal for creating clean, smooth holes in various materials. https://elecena.pl/product/28443571/ruko-102774p-ultimatecut-countersink-10-4mm-hss-triangular-shank 2025-04-16 https://elecena.pl/product/28443571/ruko-102774p-ultimatecut-countersink-10-4mm-hss-triangular-shank 2026-07-04