This is aChromoly BMX spindle for8 spline 19mm cranks. This spindle is an extra long 200mm long (approx 7-7/8″)and thisspindle will work withmany common imported cranks like found on many complete bikes. It uses M8 spindle bolts (not included). This a great replacement spindle option for fat tire bmx bikes and a direct replacement for the SE Fat Ripper.