Shop › Double Knob Trainer - Adult 31" - 35" Double Knob Trainer - Adult 31" - 35" $133.00 Double Knob Trainer. Great to keep hands over/under through the zone. Free Customization available when added to Cart! Double Knob Trainer. Great to keep hands over/under through the zone. Free Customization available when added to Cart! Add to Cart Added! Vuk Gripz $18.00 Color: Black Yellow Green White Blue Red Add Added! Bottle Opener Addition $35.00 Add Added! + Upgrade to MLB Prime Pro Maple $32.00 Add Added! You Might Also Like One Handed Heavy Trainer 20" $72.00 Adult Weighted Trainer - 31"-35" Max Barrel Width 2.51" $115.00 Model #S318 31"-34" $133.00 Model # RA13 - Adult - 31"-34" Max Barrel Diameter 2.455" $133.00 Hand Eye Trainer - 27"-35" Max Barrel Width 1.60" $77.00
