 While still utilizing the rolling nut mechanism, 13th century European composite crossbows were probably not much worse compared to the Chinese crossbow, if at all, in terms of draw-weight.From the 13th century onward, European crossbows made use of spanning mechanisms not seen in China such as the pulley, gaffle, cranequin, and screw.Furthermore, 14th century European crossbows could be made of steel, increasing their draw weights beyond even the heaviest Chinese infantry crossbow.