The largest of the Aero cleat range. An aluminum cleat rigged on a rope. Strong and wear resistant. The C827 Aero base is fitted with the C211 Mk1 aluminum cleat. Ideal for sports netting, canvas structures, tie-downs radio masts and aerials. Easy to rig and adjust to give a 2:1 advantage. The position of the cleat on the rope can be adjusted by hand. No tools required. Ideal for lines 4-6mm.