Most efficient drift fishing with lure or bait for steelhead, slamon, trout, walleye, bass and other game fish. Advantages are less snagging, longer drifts, easy hook-up, better line feel, longer casts, rhythmic action and less line belly. The bouncing betty is an environmentally safe alternative to lead.....Black rubber weights available in 1 oz, 1 per pack. Works really great.