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
具備最佳強度與耐用性
12 角規格,搭配 Flank Drive® 咬合系統設計

| Dimension A, Hex OD, inches | 39/64 |
| Dimension C, Bolt Clearance Depth, inches | 41/64 |
| Size, inches | 7/16 |
| Country of Origin | USA |
| Dimension B, Square Drive OD, inches | 1/2 |
| Dimension D, Assembly Length, inches | 1-7/16 |
| Dimension E, Hex Depth, inches | 21/64 |
| Style | 12-Point |