Rotating bar challenge

Rotating Hang Bar with Ball Bearings – Grip & Hang ChallengeThis rotating hang bar with integrated ball bearings is ideal for intense grip training, climbing training, ninja sports, and demanding hang challenges. The freely rotating bar prevents static holding, significantly increasing the difficulty and effectively training grip strength, forearms, hands, and shoulders.The design is specifically engineered for the use of ball bearings, ensuring smooth and consistent rotation. Perfect for hang challenges (e.g. a 100-second challenge) or as a versatile training tool for both outdoor and indoor use.Features🔄 Freely rotating bar using ball bearings💪 Extreme grip strength training🧗 Ideal for climbers, Ninja Warrior, and calisthenics athletes🛠️ 3D-print-friendly design🌳 Suitable for outdoor or indoor mounting (e.g. on trees, frames, or racks) Parts needet: 4x ball bearings (two for each side) inner diameter, 50mm outer diameter, 65mm 7mm hight https://www.amazon.de/dp/B0834QW1SW?ref=nb