STIHL RAPID™ Super 3 is the reduced vibration and low kickback tendency version of STIHL RAPID™ Super. RS3 is an aggressive full chisel chain, but has a single-humped drive link to reduce kickback tendency and the new cutter and tie strap design reduces vibration levels when cutting. RS3 also features excellent cutting and plunge cutting efficiency.     3/8"         1/4" PICCO .325" 3/8" .404" 0.050"       3624   0.063"       3626   If you need assistance with finding the correct chain, please use the Saw Chain Selection Guide