Highlights: - Converts a standard Yonico rail and stile bit set to be compatible with flat plywood center panels - Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge - Compatible with rail and stile bits with a wide diameter of 1-5/8 - Silver induction brazing for maximum strength and durability - Manufactured with anti-kickback design to help prevent workshop mishaps Item Includes: 1 Replacement Kerf Cutter Convert standard rail & stile router bits to be compatible with plywood center panels. These blades replace the existing slotting blades on Yonico rail & stile sets and reduces the slot width to match plywood thickness. Note: this set contains 2 replacement blades only.