Button Hook has a specially formed stainless steel wire loop which goes through the clothing eyelet and secures the button to allow it to be pulled back through the eyelet.. Wood handle is 5/8" diameter. Overall length is approximately 7 3/4". Zipper-Aid model has small 5/8" brass plated hook to pull zipper. . . Kinsman Enterprises 30005 Button/Zipper Hook, 7-3/4" Length. 30005. Country of Origin : United States.