CAMP Dryad Small Double Pulley The large connection hole accommodates two carabiners. Prusik minding, the self-locking knot can be installed on both sides and both wheels. Self-lubricated brass bushings are the perfect solution for light applications at low speed. Efficiency: 80%. Aluminum alloy body and wheels, stainless steel axle. Ropes up to 13 mm Maximum Breaking Load: 24 kN Working Load Limit: 4 kN