only black ones i know of are thise cheap delex ones

i had the orange ones years ago on mine never destroyed them at all, i actuall still ahev the beam as my escos shell is rolling round on it and they havt deteriated in the past 6 years they have been in that beam

agree ford ones are the best but try and find them

poweflex are purple aswell and superflex are blue which is what i have for the escos