2" X 7/8" Spring works for the Main sheet blocks on the Laser®, Sunfish®, Otimist and many other small dinghy main sheet blocks. H071Price: $1.75Sale price: $1.49 Harken Spring Cup HSB2 MP1877B$1.69 WE SHIP WORLDWIDE! We charge the actual cost of shipping. You may email us for a shipping cost estimate. Send us email intensitysails(at sign)gmail.com US$10 MINIMUM ORDER