Similar to the standard CRP100 Collar Removal Pliers, the CRP2979U Collar Removal Pliers offer a more aggressive offset of about 60 degree. The CRP2979U Hi-Lok Pliers jaw serrations are perpendicular to the collar seating surface when the handles are laid flat, but angle at 3 degrees if the flat part of the head is rested on the collar seating surface. The choice of plier styles seems to be a matter of personal preference. It has been our experience that they do not work as well with large collars, or steel/titanium collars where greater gripping force is required to achieve the required break away torque.