| Name: | Petzl William Ball Lock (metal sleeve) |
| Category: | triple-action twist lock |
| Locking Type: | full-auto |
| Locks: | double |
| Unlock Style: | press-and-twist |
| Sleeve Rotation: | 45° (unlocked) | 45° (maximum) |
| Shape: | HMS |
| Material: | aluminum |
| Profile: | flat |
| Nose: | keylock |
| Nose Guard: | none |
| Gate Shield: | relieved: blocked |
| Weight: | 95.0 g |
| Dimensions: | Length: 116.72 mm Width: 78.70 mm Rope Bearing Depth: 11.11 mm Gate Opening: 28.16 mm |
| Strength Ratings: |  25 kN |  7 kN |  7 kN |
| Other Markings: | Forged: PETZL WILLIAM Pat. | (ratings) (ce-logo)0197 Laser: WILLIAM BL Ⓗ Ⓚ EN362:2004-B  (batch-code) |
| Batch Marking Location: | spine-exterior-left |
| Collection Criteria: | ★ Personal Favorite |
| Summary: | excellent large HMS auto-locker |
| Description & Commentary: |