Airless Inserts including 20 x 2.125 Poly Foam Insert

20 x 2.125 Poly Foam Insert - Airless Inserts

20 x 2.125 Poly Foam Insert Replaces standard 20 x 2.125 inner tubes. Makes the tire "Flat Free". Airless insert fits most 20 x 2.125 in wheels Reusable. Installs with minimal tools.