Metal drill bit, elongated twist drill bit containing cobalt, extra-long swivel drill bit made of high-strength stainless steel for woodworking and deep drilling (8.5 mm)

【Dimensions】This elongated cobalt twist drill bit measures 8.5 x 300 mm in diameter and meets all your drilling needs.

【Efficient Operation】Its high versatility and ease of use significantly simplify your drilling operations.

【200 mm Extension for Deep Drilling】Its 200 mm length is ideal for deep drilling. No need to remove and detach the extension: it allows you to drill thick plates or deep parts in a single step, thus improving work efficiency. It is particularly suitable for applications requiring great depth, such as machine repair and the installation of metal structures.