With Spax chipboard screws, you create strong and dependable timber joints with ease. The t-star plus T20 drive provides optimal torque transfer, keeping your bit firmly engaged and preventing cam-out during demanding driving tasks. Thanks to full threading across the entire 50 mm length, you achieve maximum pull-out resistance when joining wood panels or mounting metal hardware. The countersunk multi-head sinks neatly flush into the wood surface, eliminating the need for separate pre-countersinking. Additionally, the durable Wirox coating delivers superior corrosion protection to the steel, keeping your interior and sheltered outdoor constructions solid over time.