Hook Range #28 to #10/0 The Master Vise is so named because it does it all. Featuring a patented jaw mechanism that securely holds hooks from a #28 to 10/0, this vise is the vise for the tyer who turns out everything from tiny trout flies to feather dusting sized billfish offerings. If you are a production tyer or a serious saltwater buff, this is the vise to own. With the advanced rotary actuator, the independent position of the fly and the crank arm affords total versatility in all rotary functions. Without question, the Master is the most advanced and most versatile vise available today.