C.A.M.P. Tethys Pulley – 13 mm Rope Capacity High-performance rigging pulley tailored for UK tree-care, arboriculture and rope-access professionals. The C.A.M.P. Tethys Pulley (13 mm rope version) offers a compact, lightweight aluminium body with rotating side plates and a large dual-carabiner attachment point — making it ideal for rigging, hauling systems, progress-capture setups or lightweight anchor repositioning. Verified for ropes up to 13 mm diameter. Key Features & Benefits 13 mm rope compatibility: Compact & lightweight construction: Rotating side-plates with large hole: Prusik-minding design: Self-lubricating brass bushings (~80% efficiency): Aluminium alloy body + stainless steel axle: Technical Specifications Specification Detail Model / SKU CA-2154 (Tethys 13 mm) Rope Diameter (max working line) Up to 13 mm Inner Sheave Diameter 28 mm Weight Approx. 100 g Minimum Breaking Strength (MBS) 24 kN Efficiency (bushing/rotation) ≈ 80% Standards / Certification EN 12278:98 Why Choose the Tethys Pulley? When working in UK tree-care, arboriculture or rope-access systems where space, weight and adaptability matter, the C.A.M.P. Tethys delivers a professional-grade solution. Its compact size and dual-carabiner capability make it ideal for rigging in confined spaces — such as branch canopy access or tight anchor setups — without sacrificing strength or durability. A reliable choice for professionals who demand efficiency and flexibility in their equipment.