Hook Tension Spring by Hosmer [55363] - $5.66 : Amputee Supply, Prosthetic supplies for amputees

E-Z Hook Tension Band Applier [55144] - $51.35 : Amputee Supply, Prosthetic supplies for amputees

Tension Springs - Springs

Tension Springs - Springs

Model 8X Medium Adult Size Hook [55031/2] - $613.00 : Amputee Supply, Prosthetic supplies for amputees

Hosmer #8 Hook, Fillauer LLC

Extension Springs With Hook Ends

Hosmer Prosthetic Model 5XA Hook: Aluminum, Nitrile Rubber

Hosmer #12P Hook, Fillauer LLC

60pcs Extension Spring Assortment Kit, 0.035 Wire Diameter, 1/4 Outside Diameter, 13/32 to 2-1/4 Length, Stainless Steel Mechanical Small Extension Springs with Hook Ends: : Industrial & Scientific