This handy little cable is a great accessory for your helmetlok. Slide one end through your jacket sleeve, hook the loops at the end of the cable onto the helmetlok and attach it to your bike. Alternatively, if your helmet does not have D rings, run the cable through your helmets chin piece, loop the ends through your helmetlok and lock it to your bike. When you are finished, it will recoil back to its original length and will slip easily into your pocket. The cable is made from 3mm thick nickel plated steel cable, is only 11cm (4-1/2 inches) long when coiled, stretching to 180 cm (6 ft) and has a load capacity of 100 kgs.