Premium Carbon & Steel Stairball Knob Chain
High-density carbon steel core ensures durability & optimal weight distribution for precise throwing technique. Seamless steel ball with anti-slip knurled surface enhances grip during track & field drills. CNC-machined knob chain prevents tangling for uninterrupted training sessions.
Professional-Grade Training Tool
Precision-balanced at 3/4/5/6/7.26kg options to match athlete skill levels. Ideal for hammer throw drills, rotational strength conditioning, and stairball resistance workouts. Electroplated finish resists corrosion in outdoor environments.
Bulk Purchase Advantage
Direct factory pricing for gyms, schools, and track teams. Ships globally with wholesale MOQ discounts. Compliance with IAAF equipment standards.