The Fish Fighter™ XL Sinker Gauge was designed to help you easily sort your larger cannonball-style lead weights from 8oz all the way up to 20oz. It’s easy to use — just find the hole size that closest fits your sinker and you will quickly know what sinker weight you have. This is an absolute must-have for any serious fisherman who wants to know exactly what sinker weight they are using. Made from marine-grade stainless steel, this sizing gauge will last through decades of use. This product also carries the Fish Fighter™ 100% Money-back guarantee.