• Corrosion protection: High-quality WIROX A9J coating that offers greater protection against oxidation and hardness than conventional galvanizing. • Fast and effortless: The serrated thread and the special 4CUT point reduce the splitting effect and allow for fast work without the need for pre-drilling. • Precise screwing: T-STAR plus T20 force transmission system with guide pin that guarantees a firm fit of the bit and prevents it from slipping out. • Stable joints: The partial thread forcefully joins the elements, avoiding gaps, and the MULTI countersunk head guarantees flush countersinking in the wood. • Professional quality: Precision-made in Germany for stable and durable wood joints. • Dimensions: 4 mm diameter and 60 mm length.