The roll line replacement cushions are suitable for use with the blaster killer and killer titanium plates avaliable in 5 different coloursdurometer39s to suit your setupgreen extra soft upto 35kggrey soft upto 45kgclear blue medium upto 55kgclear mediumhard upto 70kgyellow hard more than 70kgplease note price is for a pack of 8 enough for a pair of plates