?Diamond Interface Design?- Hole spacing length:170mm; total length:210mm.
?High Quality Material?- the crank arm made of high quality Aluminum alloy, more firm and durable, effectively extend service life.
?How To Use?- Simple operation, can be completed independently. Note: please check if the orientation of your right crank arm is square or diamond keep both left and right arms having the same hole.
?Widely Usages?- Suitable for road bike, mountain bike, folding bike, fixed gear bicycle, etc.
?Note ?- 100% high quality guarantee, if you have any question or dissatisfaction with the product,please contact us first and we will provide you with good customer service.