Bit-Check-12-Wood-1-Set-12-Piece-Wera-05057423001-p-The-Wera-Bit-Check-12-Wood-1-with-Ring-Magnet-Rapidaptor-is-a-long-life-bit-set-which-is-designed-for-compact-&-organised-tool-storage-p-p-Utilising-a-unique-combination-of-special-material-hardening-&-precision-manufacture-Torsion-bits-are-designed-to-prevent-premature-wear-for-enhanced-service-life-The-bits-are-designed-for-driving-screws-into-normal-construction-timbers-&-materials-Through-hardening-creates-a-much-harder