Bicycle soft tail folding bike spring shock absorber $ 7.94 material: metal Category: Bicycle rear spring shock absorber Purpose: Mountain bike shock absorber compressor bicycle soft tail folding bike spring shock absorber Size: A: 100 length 500 pounds B: 100 length 650 pounds C: 125 long 750 pounds D: 125 length 1200 pounds E: 150 long 750 pounds F: 150 long 1500 pounds