The Grubster is a ringed, chubby bodied grub that shares its tail, its swimming action and its fish catching heritage with our SwimFish and Swimmin' Ribster. The 2.75" version is a smallmouth killer that's equally deadly on largemouth, walleye, sauger and perch and sea trout. It's even great on a small umbrella/alabama rig! The 4.25" size was designed for use as a swim bait, as a vibrating jig trailer and on umbrella rigs, as well as for deep water 'dragging' in cold water situations. The 2 incher is a killer on huge, slab crappies, big perch, river smallmouth and trout of all varieties.