These are 1 pair of Replacement Bosch Carbon Brush Springs for Lawnmowers we are the only sellers online to sell these. ROTAK 34 ROTAK 32R ROTAK 40 ERGOFLEX - 3600HB1270 ROTAK 40GC ROTAK 340C ROTAK 370 43LI ERGOFLEX IMPORTANT NOTICE BEFORE BUYING These springs will have slight more tension then originals so you need to ensure you use needle nose pliers to install carefully so you do not damage the brush holders. We have installed tested them on and off several times with no problems when using this method as pliers is the best way to hold the springs in place to avoid flying off or flicking onto delicate plastic parts of the brush holder.