The 40 and 50 mm sheaves are manufactured in a high-strength resin with a double side ball bearing.
The 60mm sheaves are manufactured in anodized aluminum and the main composite is fiber bearings and 2 side ball bearings.
40mm sheaves have a SWL of 600kg suitable for 14mm lines
50mm sheaves have a SWL of 800kg suitable for 16mm lines
60mm sheaves have a SWL of 2200kg suitable for 18mm lines