M:part Elite Threadless Headset 1 Inch Ec30/25.4 Ec30/27

Aluminium - Corrosion resistant lightweight metal

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

Inch - Equivalent to approximately 2.5cm

Warranty - A service provided by the retailer or manufacturer to ensure a device works for a period from new

star - A giant ball of plasma held together by gravity.

Year - The time it takes the planet earth to orbit the sun. This takes around 365.25 days.

Quad - Multiple items, meaning four

Warranty - A purchasers guarantee from the manufacturer for replacement/fix of goods when faulty.

Bearings - A direction or a way someone moves around.

Year - 365 days (366 days in a leap year), the time taken for planet earth to make one full revolution around the sun.

Design - A drawing or styles that shows the look and functionality of something before its made.

Angular - Something that has sharp corners or angles.

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.