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Proto Clamps offer full length forcing screws that provide greater strength even with minimum capacity. This design is optimized for strength, making Proto Clamps some of the strongest clamps you can get. In addition, Proto Clamp's hardened tip gives extra grip and holding force to the clamp, which allows them to be used for heavy-duty applications. When you're looking for heavy-duty clamps, there's no better choice than Proto Clamps.

Proto J10-HDL 0-10-3/8" Extra Heavy-Duty C-Clamp
- Full length forcing screws provide greater versatility
- Strongest C-clamp design
- Heavy-duty threaded hub provides maximum screw support

Proto J12-HDL 0-12-1/2" Extra Heavy-Duty C-Clamp
- Full length forcing screws provide greater versatility
- Strongest C-clamp design
- Heavy-duty threaded hub provides maximum screw support

Proto J12P2-HD C-Clamp Forcing Screw
- Full length forcing screws provide greater versatility
- Strongest C-clamp design
- Heavy-duty threaded hub provides maximum screw support

Proto J5-HDL 0-5-3/8" Extra Heavy Duty C-Clamp
- Full length forcing screws provide greater versatility with the minimum capacity always bein
- Strongest C-clamp design
- Heavy-duty threaded hub provides maximum screw support

Proto J6-HDL 0-6-5/8" Extra Heavy-Duty C-Clamp
- Full length forcing screws provide greater versatility with the minimum capacity always being -inch0?
- Strongest C-clamp design
- Heavy-duty threaded hub provides maximum screw support

Proto J8-HDL 0-8-1/4" Extra Heavy-Duty C-Clamp
- Full length forcing screws provide greater versatility
- Strongest C-clamp design
- Heavy-duty threaded hub provides maximum screw support