SMAI 2-in-1 Isometric Cup / J-Hook Utility for Vanta Series Power Racks The SMAI Hybrid Isometric Cup / J-Hook is a versatile accessory designed to maximise your training options on a single power rack. Combining two essential functions in one, it features: Lower C-Shaped Cup – Perfect for isometric barbell movements, allowing you to train static holds safely and effectively. Integrated J-Hook – For quick and convenient racking during regular barbell exercises. Specifications: Design for use wit