Roger King Swing Doctor Blue. This tour model has successfully achieved a balance of thickness, allowing for the insertion of a 58-caliber grip commonly used in general clubs, while still maintaining flexibility. The flexibility is slightly firmer than the orange model, but still quite pliable. I purchased this new, but have only used it about 5 times at the driving range. Please refrain from purchasing if you are overly concerned about the condition, as this is a used item. Type...Training Equipment Details...Swing Training Equipment