The Round Head Jig is the most popular all-around head style used in all water types in the world. Probably responsible for a greater variety of catches than any other lure. It also earns points as a good casting jig and a fairly rapid sinker. Note:Product 1016 uses Eagle Claw 570 or 575 hooks with the following sizes: 1/32oz - 6, 1/16oz - 4Product 3109 uses Eagle Claw 570 or 575 hooks with the following sizes: 1oz - 3/0 or 4/0