The SKLZ Gold Drive helps athletes improve their club head speed and technique to create a more consistent swing. This dynamic training tool includes two weights that can be configured into three different club weights to work on overall swing. Alternate between overload, underload, and counterweight training. Use only the shaft with no weight, attach the yellow counterweight, or train with both the black head and yellow counterweights. Weights will easily twist into place and are designed to fall off if not attached properly.