獨特多齒咬合設計,可適用於一般六角及十二角扣件
圓弧邊緣設計,可抵抗損傷與刮痕
轉接頭中心到中心長度,方便計算扭力數值
採用高品質美國鋼材製造
精密加工並經熱處理,提供最佳強度與耐用性

| Dimension E, Length, Ctr. to Ctr., inches (mm) | 2 (50.8) |
| Dimension D, Head Depth, Square End, inches (mm) | 7/16 (11.11) |
| Size, inches | 1/2 |
| Country of Origin | USA |
| Dimension B, Head Dia., Square End, inches (mm) | 3/4 (19.05) |
| Dimension A, Head Dia., Wrench End, inches (mm) | 25/32 (19.84) |
| Spline Size | 16 |
| Maximum Recommended Working Torque, in-lb | 310 |
| Dimension C, Head Depth, Wrench End, inches (mm) | 3/16 (4.76) |