M:part Elite Headset R408 Bearing Pair Zs44/ec34/is41

Diameter - A measurement across a circle passing through the middle

Inch - Equivalent to approximately 2.5cm

Quality - An object that has quality is superior in function and finish than a less quality object.

Size - is the measurement of how big an object is in space.

Quad - Multiple items, meaning four

Width - The measurement of something from one side to the other.

Bearings - A direction or a way someone moves around.

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.