The Redi-Edge® Redi-Trac Sharpener is universal and can fit on any track system for boats of all sizes! Produced from military-grade aluminum for extreme durability and long life, then clear coat anodized to protect against any corrosion. The Duromite™ inserts are harder than any knife blade and come factory pre-set to the inclusive angle of 30°. The 30° angle maintains a consistent 15° double cutting edge on your fillet knife or boning knife! Want to remove the sharpener when not in use on your boat? No problem! The Redi-Edge® Standard Sharpener can be removed with ease, so you can have a sharpener on the go if needed. Black Redi-Edge® Standard 30° sharpener included.