Chicago Pneumatic CP4220AL - Alligator Jaw Air Rivet Squeezer, Max Moving Plunger Travel 0.77 in, Max Compression Force 4090 lbf / 18.2 kN 6151710230The ergonomic and safe way to do riveting The powerful, silent, and vibration less air aerospace Squeezers The CP42 series includes six models of squeezers which covers the most frequently used rivets in metal structure repair for aerospace, and their functional design is truly first class. You have a choice between C jaws and Alligator jaws to best fit your application and to give optimal access.