Using the web-based World Energy Exchange, Detroit Edison was able to:
Chance has introduced a set of Slack Blocks with a 750 lb. (340 kg.) working load rating. The fully-assembled set includes 30 ft. of 3/8" braided Poly rope, two double blocks (each with a spring-loaded latch, one with a rope-snubbing hook) and a swivel hook. The set weighs only 4-1/4 lb. (0.45 kg.). Steel block bodies and hooks are galvanized. The swivel hook and a flat hook are available separately as well.