CARL RM-18/2 21-Inch Cutting Mat for all 18-Inch Trimmers High-quality replaceable cutting mats can be rotated to extend useful life up to 3,000 cuts Made from high-quality pvc It can provide as many as 4 times the life quality of a typical cutting mat 21-Inch replacement cutting mat for rt-218 21-Inch replacement cutting mat for dc-238