Invaluable as guides for small trip lines. The pulleys can be secured with a small shackle, dyneema or polyester cord, or even cable ties for light loads. The axles are hollow so they can be fixed with a screw for side mounting purposes. We have now also introduced a small upright block. Specification Type: DoubleRope Size: 2-5 mmSheave Diameter: 16 mmWeight: 10 gBreaking Load: 275 kgMaterial: 316 Grade Stainless SteelSheave: AcetalFits Shackle Pin Diameter: 4mm