The Primo plunger is specially designed to provide a first experience for archers embarking on the discipline of recreational and competition archery. Featuring a comfortable grip and a simplified adjustment system, it will support the evolution of a wide range of archers wishing to develop their skills with confidence and ease. The set includes: standard thread to fit all bow risers, piston guide calibrated to one hundredth of a millimeter, a stainless steel tip of unequalled robustness, three springs of different stiffness, a allen key, a 1” M4 screw to help tighten the plunger on the riser & one spare M4 screw.