Comprises six sided TRX-P* and five sided security TRX-TS* bits manufactured from S2 steel. TRX-P* fixings are now commonplace on new European vehicles such as Renault, Vauxhall, Citroen and Peugeot. If a TRX-Star* bit is used on a TRX-P* fixing it can result in damage to the fastener and tool. Using the correct bit gives greater torque and minimizes wear. TRX-TS* bits are suitable for a range of applications such as fuel injection pumps and air conditioning units. Includes 1/4"Sq x 1/4" Hex, 3/8"Sq x 10mm and magnetic quick chuck bit adaptors. Supplied in storage case.