The 3.5-gram version promotes a slow descent to shallow depths; the 7-gram version provides more stability when the current or distance requires it. Let the weight slide freely or lock it in place with a stopper, depending on the desired action.
Check the line at the connection point and the knot after it makes contact with the bottom. The black color allows for a subtle setup with dark lures. The packets contain four 3.5-gram weights and three 7-gram weights.