Discovery set for the concealed fastening of terrace boards. Concealed fastening - the new wolfcraft connection system for wooden terraces. Designed for the highest standards of aesthetics and durability. It creates a gap between the beams and the terrace boards, ensuring optimal ventilation beneath the boards, preventing moisture accumulation and premature fading of the wood. Suitable for approximately 7 linear meters of beams with 140 mm wide terrace boards, compatible with boards ranging from 100 to 150 mm in width. The screws are no longer visible. The movable area of the connectors compensates for the expansion and contraction movements of the wood. No more broken screws or split boards. Quick and easy assembly with the drilling and screwing aid. Contents: drilling and screwing aid, 50 connectors, 300 stainless steel screws TX 20, magnetic bit holder, TX bit No. 20.