These are great! Use them anywhere you need a piece of cloth held down securely—mooring, toneau, & boat covers, dodger curtains.... The Shock Cord Cover Clip is installed by making a small hole in the fabric and snapping its self-locking sections together. Order Lacing Knob to complete the assembly. Measurements:
Large knob diameter - 1 1/8"
3/16" Shock Cord
When relaxed - shock cord loop end to center of knob is 3". Overall length 3 1/2" end to end.
When pulled tight - shock cord loop end to center of knob is 4 1/4". Overall length 5" end to end (max. extension when pulled tight)