10pc XZN Triple Square Spline Socket Bit M4,5,6,8,9,10,12, Tamperproof M14,16,18

10pc XZN triple square bit socket set includes Q: What's the d ifference between XZN- Triple-square spline and 12 points spline bits?. The triple-square, also known as XZN, is a type of screw drive with 12 equally spaced protrusions, each ending in a 90° internal angle.