BlueSpot Impact Key Torx 3/8″ Drive Bit Socket Set T20 ?. T70 Bits 9pc. Drill Bits. Driver Bits. The Blue Spot Tools 9 PCE 3/8″ Impact Torx Bit Sockets (T20-T60) are ideal for use with 3/8″ tools. The bits are manufactured from heat treated S2 steel.