Bungees are priced per each. The shock cord/bungee is 3/4 x 8 and applicability is for the following aircraft: Piper J-3 (S/N 8278 and up) Piper PA-18 (S/N 1 to 3013) Piper PA-18 "135" with hydrasorb unit (std) on S/N 3014 and up Piper PA-18 "150" Piper PA-18A with std shock strut on S/N 1 to 3013 Piper PA-18A with hydrasorb unit (std) on restricted category planes with S/N 2187 to 3013 PA-18A with hydrasorb unit (std) on S/N 3014 and up (4) are required per ship