These strikers are made with a walnut topper with a choice of woods used for the 5/16" dowel rod. Each wood type has it's own unique sound on the different call surfaces ranging from high pitched and clear to deeper older hen with rasp. (ie; Walnut-high pitched raspy, Osage Orange-older hen some rasp, Indian Rosewood-high pitched slight rasp, Hickory-younger hen with rasp, Spectraply-higher pitched and raspy, Ironwood-nice pure hen yelps