Set containing Impact bit holder with magnet, Impact bit holder with quick chuck and 27 pcs 30mm Impact bits. All bits with 1/4" hexagonal drive. Specially adapted for impact screwdrivers. Supplied in a plastic case with transparent cover with snap lock and hinges with a metal pin. With belt clip. Fits in TC tray TTTJ04 that then fits in Teng Tools tool boxes and tool trolleys.