Shimano CS-HG20 7-speed Cassette 12 - 28T

Shimano - A high end bike part manufacturer

Steel - An alloy made predominately of Iron combined with <2% carbon

Computer - A programmable electronic machine which stores and manipulates data.

speed - A measurement of how fast an object travels between two points

Corrosion - The wear and tear of an object.

Resistant - Something that can repel against something.

Cyclestore is a leading online cycle retailer, selling a large range of bicycles, bike accessories, components and clothing, together with camping and hiking equipment and ski and snowboard accessories. Cyclestore brings over 20 years shop trading experience to its online store, and the knowledgeable and helpful staff are able to answer technical queries relating to all bikes and equipment. The range of bicycles includes mountain bikes including full suspension and hard tail mountain bikes, road bikes with light, streamlined designs for fast speeds, sports hybrid bikes, comfort and leisure bikes, BMX bikes, folding bikes and touring bikes, with brands including top names such as Kona, Mongoose, Raleigh, Specialised, Giant, Carrera, Dahon and Dawes. The large range of bike accessories includes bags and panniers, bells and mirrors, bottles and hydration packs, helmets, lights, locks, cleaning accessories and pumps. Personal accessories include cycle shoes, sunglasses, reflective and safety wear and body armour.