"When fresh spawn isn't available, Atlas-Mike's Sac Attack Imitation Cluster Eggs will get you the bites you need. In fact, some anglers prefer these over the real thing, especially when current, nuisance fish, or egg conditions won't allow your bait to stay in place. These plastic clusters are great for drift fishing for steelhead, salmon or trout, and extremely easy to use. Simply push a single hook through the egg cluster, and run your weight 18"" to 24"" up the line. Plastic cluster eggs Often preferred over the real thing Easy to use"