This is a set of 18 diffferent sized needles:2.0mm2.25mm2.5mm2.75mm3.0mm3.25mm3.5mm3.75mm4.0mm4.5mm5.0mm5.5mm6.0mm6.5mm7.0mm8.0mm9.0mm10.0mmBamboo needles have a completely different feel to metal needles - they are smoother and lighter - perfect if you are accused of disturbing others with the metallic clickety clack of your regular knitting needles!