Snap-on Tools NEW 62 Total Pieces 1/2 Drive Chrome 6 Point. 10mm up to 25mm +27mm METRIC. 6 Point Shallow & Deep Socket BONUS Set. 313TWMYA Bonus Set &. Snap-on Tools USA 1/2 Drive. 6 Point Shallow & Deep. TW121A = 3/8″ TW141A = 7/16″ TW161A = 1/2. TW201 = 5/8″ TW221 = 11/16″.