Double Pulley for Extractor Kit

This double pulley is commonly used with the 4-1 mechanical advantage lift and lower device (R025,RP703A).??Features include the following: ?
• Swivel side plate allows easy rope installation?
• Tamper proof riveted axle?
• Individually serial numbered?
• Sintered bronze bearings?
• Approved Standard EN 12278??Specifications: ?Minimum Rope Diameter: 10mm?Maximum Rope Diameter: 13mm?Body Material: Aluminium?Sheave Material: Aluminium?Protective Finish: Anodised?Minimum Breaking Strength: 40 kN?Working Load Limit: 800 kgs??Size?Height: 154mm?Width: 74mm?Thickness: 62mm