Ruko HSS Hollow Drill Bit - 15mm Diameter, 30mm Depth, Weldon Shank

Serious metalworkers, this Ruko hollow drill bit is a game-changer for drilling through tough materials! The 15mm diameter with 30mm depth is perfect for creating clean holes in steel beams, sheets, cast steel, and non-ferrous metals. The HSS (High-Speed Steel) construction with rectified CBN (Polycrystalline Cubic Boron Nitride) treatment means this thing lasts way longer than standard bits. The Weldon shank design ensures secure mounting in magnetic base column drills, foot drills with Morse cone connections, or directly into RUKO RS 10 type drills. You'll need the 108 302 or 108 303 adapter for some setups, but once you're set up, the cutting power is impressive. The hollow design means you're only cutting the perimeter, which requires less power and creates less heat buildup. Perfect for structural steel work, metal fabrication, or any situation where you need clean, precise holes in thick metal. The four teeth design provides aggressive cutting while maintaining stability. Comes in a protective plastic case with a hanger for organized storage. Much more efficient than traditional twist drills for larger holes in metal. The quality is professional-grade - you can feel the difference immediately compared to cheaper alternatives. Whether you're working on construction sites, in a fabrication shop, or doing heavy DIY projects, this bit handles the tough jobs without dulling quickly. The 19mm shank provides solid grip and reduces vibration during operation. If you're tired of burning through regular drill bits on metal projects, investing in quality hollow drill bits like this will save you time, frustration, and money in the long run. The performance on steel beams is particularly impressive - clean holes without the struggle you get with conventional drilling methods.