Self-jamming pulleys	Ref	Certification	Rope diameter	Sheave	Efficiency	Working load	Weight (g)
Pro Traxion	P51	CE EN 567 EN 12278	8 – 13mm	38mm Sealed Ball Bearings	0.95	Pulley: 3 kN x 2 = 6 kN Self-jamming: 2.5 kN	265
Mini Traxion	P07	CE EN 567 EN 12278	8 – 13mm	19mm Self-lubricating bushing	0.71	Pulley:2.5 kN x 2 = 5kN Self-jamming:2.5kN	165