At Westbrook Cycles, we stock and supply an excellent range of bicycle tools - providing everything you need for simple maintenance, right across to providing the tools needed for complete bike rebuilds.
These tools are purchased by a range of customers, riding all kinds of bikes. One of the best selling ranges we supply within our tool collection, is our range of Allen Keys. The most common sizes we supply are 4mm,5mm and 8mm.
On the bike, the seatpost, stem, steerer tube typically use 4 or 5mm allen keys, and 8mm allen keys are used for tasks such as tightening pedals onto the crank arms. You can view the complete range above.