KS-40 | KS-60 July 24, 2018 Tweet KS-40 | KS-60 #40*6 (Ø 60, lenght 40) #60*6 (Ø 60, lenght 60) Synthetic. #40*6 (Ø 60, lenght 40) #60*6 (Ø 60, lenght 60) Synthetic.