Rosewill Anti-Static Mat with Grounding Wire. ESD Mat Size 23.6 x 23.6 Inch. 10 Feet Coiled Grounding Cable with Alligator Clip ESD Desktop Mat RTK-ASM Dimensions: 23.6" x 23.6" Length of grounding cord: 10ft. Top Layer - Anti-Static PVC (Ivory) Bottom Layer - PVC Foam (Black) Resistance: 10e7 - 10e9 Ohm