Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon C-Clamps Set of 4 by PERRIN Sale $13.80 | / SKU 72-535 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available C-Clamps Set of 4 a set of 4 c-clamps used for keeping the mainspring wound when taken out of barrel.