Fir Fillet 6051 – 1-1/2″ Call For Quote $0.91 Interior/Exterior handrail fillet 3/8″ x 1-1/2″ View Product Catalog Fir Fillet 6051 - 1-1/2" quantity Add to list Want a discount? Become a member. SKU: F6051 Category: Stair Parts Tag: fillet Description Description Fillet, square edge. For use with handrail plowed at 1-1/2″. 3/8″ x 1-1/2″ F6051 – Fir Available in random lengths.