Snap-on® 套筒採用 Flank Drive® 系統,貼合螺帽/螺栓平面施力,提供 15–25% 更強的扭轉施力
表面採鎳鉻合金處理,可抗鏽防蝕
Snap-on® 套筒採同心薄壁結構設計,提升強度並增加狹小空間之適用性
12角規格搭配 Flank Drive® 咬合系統設計
符合 AS954 航太標準

| Dimension C, Bolt Clearance Depth, inches | 1-5/8 |
| Size, inches | 3/16 |
| Country of Origin | USA |
| Dimension A, Hex End Diameter, inches | 5/16 |
| Finish | Chrome |
| Dimension D, Length, inches | 2 |
| Dimension E, Hex Depth, inches | 3/16 |
| Style | 12-Point |
| Dimension B, Drive End Diameter, inches | 1/2 |