12" x 18" Self-Healing Cutting Mat 5-Ply (2 Pack) - Double-Sided Green/Black Craft Mat, Non-Slip Cutting Mats for Crafts, Sewing, Quilting, Scrapbooking Airbrush Systems Hobby Craft Basic-SP Custom Shop Premium Ultra Flow

Custom Shop Premium Ultra Flow Urethane Clear (RSP HS3010) has a 4 to 1 Mix Ratio

Opaque Yellow

Filter has simple filter element replacement

Works great under all major brands of truck bed liner like CUSTOM COAT

12" x 18" Self-Healing Cutting Mat 5-Ply (2 Pack) - Double-Sided Green/Black Craft Mat, Non-Slip Cutting Mats for Crafts, Sewing, Quilting, Scrapbooking Airbrush Systems Hobby Craft Basic-SP Custom Shop Premium Ultra FlowThese 3mm thick mats feature a durable 5 layer construction, a non slip, non glare surface, 1" grid with 1 2" marks for precise alignment as well as 30, 45, 60 & 90 angle guides. Resilient self healing surface won't break down with repeated use and actually prolongs the life of knife blades. Each cutting mat is reversible with grid markings on each side. Features: Protect your table top from sharp blades, writing instruments and other art and craft