Spirals are used for attaching chain to side of sash. Spiral fits in knothole for old sash cord. Wind spiral through chain and secure in side of sash with a screw. Spirals are 3/4" or 7/8" diameter. Hooks are used for attaching chain to antique weights. Make a noose with the hook to attach to eye of antique weight. Our modern weights are secured with #33 7/8" spirals. #44 3/4" Sash Chain Spiral Regular price: $0.48 Sale price: $0.38, 100/$26.00 #33 7/8" Sash Chain Spiral Regular price: $0.48 Sale price: $0.38, 100/$26.00 #8 Sash Chain Hook Regular price: $0.41 Sale price: $0.33, 100/$22.00