Patented Wright Drive design distributes contact over a larger surface area for greater gripping power and strength.
| PART NUMBER | NOM. SIZE | SHAPE | L | DS | DD | BD |
|---|---|---|---|---|---|---|
| 3308 | 1/4" | I | 1-5/64" | 15/32" | 5/8" | 1/8" |
| 3310 | 5/16" | I | 1-5/64" | 9/16" | 5/8" | 9/64" |
| 3312 | 3/8" | II | 1-5/64" | 5/8" | 5/8" | 5/32" |
| 3314 | 7/16" | II | 1-5/64" | 3/4" | 3/4" | 7/32" |
| 3316 | 1/2" | II | 1-5/64" | 13/16" | 13/16" | 17/64" |
| 3318 | 9/16" | II | 1-5/64" | 15/16" | 15/16" | 21/64" |
| 3320 | 5/8" | II | 1-5/64" | 1-1/16" | 1-1/16" | 3/8" |
| 3322 | 11/16" | II | 1-5/64" | 1-9/64" | 1-9/64" | 15/32" |
| 3324 | 3/4" | II | 1-5/64" | 1-13/64" | 1-13/64" | 17/32" |
| 3326 | 13/16" | II | 1-7/32" | 1-19/64" | 1-19/64" | 35/64" |
| 3328 | 7/8" | II | 1-5/16" | 1-3/8" | 1-3/8" | 39/64" |