149 Lathe turned to minimum diameter allowed in competition149 Machine finished for excellent grip and callibrated to exact weight149 Unsurpassed quality149 Meets all Collegiate, International amp High School Federation Specificationsnbspnbspnbspnbspnbsp Shot Selection CriteriaDetermination of the correct diameter is based on the fingers being in proper throwing position placed behind the shot. To obtain proper fitting of the shot to the ability of your athlete.1. Finger length is critical. The shot must rest on the Pad callus of the palm and the fingers must be up the side of the shot. Throwers with ''shorter'' fingers may find that the smaller diameter shot feels better at delivery amp those with longer fingers may like the feel of the larger diameter.2. The final decision is a personal choice by the thrower and you may need 2 3 diameters to fit the whole team. From a Biomechanical point of view, the larger shots give a greater contact area amp push zone.nbspnbspnbspnbspnbspnbsp