1/4", Square Drive

SAE SIZE METRIC SIZE          
Part No. A/F Part No. A/F D1 D2 S L T
- - TM-15 5.0 9 15 25 50 8
- - TM-15.5 5.5 9 15 25 50 8
T-114 1/4" TM-16 6 10.5 15 25 50 10
T-115 9/32" TM-17 7 11 15 25 50 10
T-116 5/16 TM-18 8 12.5 15 25 50 10
T-117 11.32" TM-19 9 14 15 25 50 10
T-118 3/8 TM-110 10 15 15 25 50 10
T-119 7/6 TM-111 11 16.5 15 25 50 12
- - TM-112 12 17.5 16 27 50 12
T-120 1/2" TM-113 13 18.5 16 27 50 12
T-121 9/16" TM-114 14 20.5 16 28 50 13