The mouse and automatic locking ring are connected to the metal shaft, smooth and friction-free, and rotate 306° to avoid twisting the hammock rope or animal belt Function: The maximum vertical force is about 4kN/880lb Turn 360° freely to avoid twisting the hammock rope or pet belt Upper aeronautical aluminium structure Super light and small, easy to use Reliable hammock clip, pet belt connection, lifting ring on backpack and sports bottle accessories Specifications: Material: Aluminium 7075 Style: D-ring/C-ring (optional) Maximum force: 4kN/env. 880 lbs Metal grid: 1.1 cm/0.4 inch Width: 4 cm/1.5 inch Length: 8.5-8.9 cm/3.3-3.5 inch Unit weight: 24 g/0.8 oz Packing weight: 49g/1.6oz Packlist: 2.Rotate the mouse button