Notrax 051 for ESD mats with earthing cable with connector, 4,5m, ring connector "The durable marbled rubber top surface is durable and easy to clean. The dense closed-cell sponge base provides cushioned comfort. Exclusive Red Stop technology creates a slip-resistant subfloor, reducing mat shifting. The single bond eliminates carpet laminating. The bond is guaranteed for the life of the carpet. 1/2"" thick beveled edges on all 4 sides for security."