Description 1" STAINLESS STEEL UNIBALL REPLACEMENT KIT Description: 1" I.D. uniballs feature a heat treated stainless steel ball & heat treated stainless steel race for maximum corrosion resistance and component longevity. These uniball’s also features a military grade PTFE woven fabric liner that helps prevent noise. Snap rings included. This Replacement Kit will service one pair of Upper Control Arms, or one pair of Lower Arms.