Fits: Ridgid R4520 Check size below to ensure fit for your application. Essential Upgrade for your Table Saw - These Laminated Zero Clearance Inserts are one of the best upgrades you can make to improve the performance of your table saw. FEATURES: Laminated for durability and a slick surface. Enjoy Cleaner Cuts - Prevents thin slices from jamming between blade and throat plate . Made of Eco-Friendly MDF with tough smooth Wilsonart Laminate. Minimizes the size of the blade opening. Works for all your blades including thin & full kerf. Prevents jamming, tear-out, and back chipping. Enjoy neat, precise cuts with less hassle. Helps dust control. Improves safety and quality of cuts. SPECIFICATIONS: Size: 16.15 x 3.75 Made of eco-friendly MDF. Laminated with good quality Wilsonart Laminate. to fit your model. PACKAGE INCLUDES: 2 Laminated Inserts. Installation instructions.