Triangle Shank Step Drill Bit: 4-12mm for PV Board, Iron, and Aluminum Drilling.

This versatile step drill bit is designed for efficient drilling in various materials such as PV boards, iron, and aluminum. With a drilling range of 4-12mm, it ensures precision and smooth cutting through tough materials. The triangular shank provides a secure grip, minimizing slippage and enhancing control during use. Ideal for professionals and DIY enthusiasts, this durable drill bit simplifies tasks by eliminating the need for multiple bits, making it an essential addition to any toolkit. Material: Bearing steel Manufacture country: China Instructions included: No