This is a pair of polyurethane rear rebound stops (bump stop), for Austin Healey Sprite 1958-1964 and MG Midget 1961-1964 using the 1/4 Elliptical rear spring. Set of 2, one kit is needed per car. Polyurethane bushes are the best compromise between standard rubber bushes and nylatron for daily driven street cars. They give improved suspension feel with greater wear resistance compared to their rubber equivalents and without the transmission of road noise and vibration suffered when fitting Nylatron style bushings. Another plus of the polyurethane bushings is that they are naturally self-lubricating.