Sidetrac Weights are designed to be used in all Hale Sidetrac baits. They can also be used in other soft plastics as well. Purpose of the all the Sidetrac Weights are to add additional weight when you deem it necesarry to meet your needs. Most of the weights are used to insert the weight into the head of the baits. This is mostly done for fishing in deeper water or getting the bait to settle faster to the bottom. They come in three sizes 1/64oz., 1/48oz., and 1/32oz.