Leecraft RG-3 Zero Clearance Insert for RIDGID R4510 (Colors May Vary) LEECRAFT Model Number RG-3 Fits RIDGID R4510 jobsite saw for use with standard and thin kerf blades 14" x 3-3/4" x 3/8" thick includes slot for riving knife Precision machined from melamine faced high density phenolic laminate Installation instructions included