Optimise your efficiency and comfort by fine tuning your stem angle with this adjustable and economical stem 3d forged and cnc machined 6061 aluminium roadmtb compatible stem 4 bolt oversized 318mm handlebar interface with relieved faceplate equipped with top cap and 4 degree 2 degree and 0 degree shims available in 12 degree 17 degree and 24 degree angles 12 degree 10 position angle range 8 degree to 16 degree in 2 degree increments 17 degree 10 position angle range 13 deg