Beiter Plunger Description Size: Thread 5/16 Length 17/5-23mm The Beiter Plunger for Olympic-style recurve bows adjusts to suit your shooting style. It comes in short varieties for archers who use stick-on rests, and in longer lengths for those who have bolt-on rests. This plunger comes with springs of different tensions, and you can then micro-tune any of the springs so the plunger matches your form. Made from German precision machined parts Threaded cylinder is made from high grade refined steel, springs from stainlessharmonic steel, notching scale cylinder and nut from anodized aluminum Micro-click spring tension adjustment allows for exact settings time after time Includes: spanner, open spanner, springs (.045, 0.60, .070), pins (34mm, 36mm) and 1.5mm Allen wrench