![Cannon Pinion Tightening Plier (10444249743)](http://perrinwatchparts.com/cdn/shop/products/64-4733-300_300x300.jpg?v=1595350513)
Cannon Pinion Tightening Plier Cannon Pinion Tightening Plier is a specialized plier designed to tighten cannon pinions onto center wheels. The plier has a regulating screw to control the amount of pressure applied to the cannon pinion, so that the cannon pinion can be tightened without being damaged. This is a Bergeon Swiss Quality product.