Callaway Tour Series Gold Wedge. Callaway Tour Series Wedges incorporate key Big Bertha technology like Short Straight Hollow Hosel (S2H2) in a more traditional club design. Often used as a replacement to the chunkier wedges which came with the original Big Bertha iron set, the Big Bertha Tour Series wedges have a more classical wedge shape and a reduced bounce angle to make shots from tight lies easier to handle.