Overview Additional Info Reviews Product Description Extension Spring, 0.21 in Id, Crossover End, 1.07 lb, Music Wire, Zinc Plated W. B. Jones extension springs are all zinc-finished for long life and better appearance, and feature finished hook ends. Product Additional Info Additional Tech Info Product Documents Product Videos Custom Field Product Reviews Write a Review Write a Review × W.B. Jones Spring Extension Spring, 0.21 in Id, Crossover End, 1.07 lb, Music Wire, Zinc Plated Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *