The WERA Impaktor Bit Check Set includes an Impaktor ring magnet holder and 29 Impaktor bits The Impaktor system provides a triple torsion zone to absorb the destructive peak loads that impact machines deliver The optional ring magnet function will securely hold up to 10in screws Ideal for confined and overhead working Diamond coating bespoke heat treatment and accurate manufacturing combine to deliver unbeatable performance Contains 7 x 25mm Phillips Bits PH1x2 PH2x3 and PH3x2 7 x 25mm Pozidriv Bits PZ1x2 PZ2x3 and PZ3x2 11 x 25mm TORX Bits TX10 TX15 TX20x2 TX25x3 TX30x2 and TX40x2 4 x 25mm Hex-Plus Bits 3 4 5 and 6mm 1 x Impaktor 8974 Ring Magnet Bit Holder