70520 Socket#1, 70540 Socket#2, 70560 Socket#3, 70580 Socket#4, 70600 Socket#5, 70620 Socket#6, 70640 Socket#7, 70660 Socket#8. Works with most common tap sizes. 10PC Spline Triple Square Bit Socket Set 1/4 3/8 1/2 Drive M4-M18 CRV Steel.