The Hook-Pal locks on your trailer hook by using small discs that simply slide onto any hook. The unique fishing tool with locking disc is expertly designed to attach a trailer hook to spinnerbaits and buzz-baits. Also used on shad rigs, umbrella rigs and securing plastic baits. By keeping your trailer hook or live bait locked on, you are less likely to lose a fish. The Hook-Pal is made from air-craft grade aluminum to last through years of use. This is the tool to help catch more fish!