Pittman Game Calls Black Diamond Diaphram Call 4 Reed. The mid-range reeds are a bit thinner than some of the other calls in the line but still have volume to carry the notes. The high-end reeds are made with a little thicker latex for a more traditional turkey sound. The low-end calls are a little thinner and lighter in order to keep your latex reeds from drying out. The Black Diamond 4 Reed call is a great example of the blending of the two. When using the Black Diamond 4 Reed call don't rely on your bird calling ability solely on one reed. You have a choice of turkey calls that can be operated with one hand. Specifications for Pittman Game Calls Black Diamond Diaphram Call 4 Reed: Manufacturer: Pittman Game Calls Color: Black/Green Fabric/Material: Latex/tape Dimensions: 0.95 X 3.70 X 7.15 in Length: 7.15 in Package Contents: Pittman Game Calls Black Diamond Diaphram Call 4 Reed