Professional internal retaining ring pliers with spring ratchet lock mechanism, 9.5" length, interchangeable 15° and 45° tips, cushion grips, and high-carbon steel construction for precision control of heavy rings.
The Internal Retaining Ring Pliers (Blue-Point®) model PR51 is a professional-grade tool designed for precision work with internal retaining rings. Featuring a 9-1/2" length with interchangeable 15° and 45° tips, these pliers deliver exceptional control and stability for heavy and large rings. The innovative spring ratchet lock mechanism allows gradual compression or expansion of rings through incremental moves, then locks at the desired size without requiring continued pressure on the handles, significantly reducing operator fatigue during extended use.
Constructed from high-carbon hardened steel with a durable Black Oxide finish, these pliers resist rust and corrosion in demanding work environments. The cushion grips provide ergonomic comfort and secure handling, while the tips mount directly to the pliers for maximum stability and precision. With a ring size range of 2-7/16" to 4", these versatile pliers are ideal for automotive, aerospace, industrial, and general maintenance applications where reliable retaining ring manipulation is critical.
The PR51 model comes equipped with PR502 tip kit including .108" tips at both 15° and 45° angles. Optional tip kits (PR501-PR508) and additional tip sizes are available for expanded functionality. This Blue-Point® tool represents the quality and reliability expected in professional tool collections, backed by Snap-on's reputation for excellence in hand tools.
Key Features
- Spring ratchet lock mechanism minimizes fatigue with gradual compression and locking without continued pressure
- Interchangeable 15° and 45° tips mount directly to pliers for maximum stability
- High-carbon hardened steel construction provides exceptional durability and strength
- Black Oxide finish resists rust and corrosion in demanding environments
- Cushion grips offer ergonomic comfort and secure handling for extended use
- Spring return mechanism for smooth operation
- Handles heavy and large rings safely and easily
- Ring size range from 2-7/16" to 4" for versatile applications
Technical Specifications
| Specification |
Value |
| Model Number | PR51 |
| Length | 9-1/2 inches |
| Tip Angles | 15° and 45° |
| Tip Sizes Included | .108" (15°), .108" (45°) |
| Ring Size Range | 2-7/16" to 4" |
| Shaft/Bore Diameter | 2-7/16" to 4" |
| Material | High-carbon hardened steel |
| Finish | Black Oxide |
| Grip Type | Cushion grips |
| Tip Kit Included | PR502 |
| Optional Tip Kits | PR501-PR508 |
| Optional Tips | .108" at 0° |
| Lock Mechanism | Spring ratchet lock |
| Spring Return | Yes |
| Brand | Blue-Point® (Snap-on) |
