Bertech ESD High Temperature Rubber Mat Roll, 2.5' Wide x 10' Long x 0.08" Thick, Gray RoHS Compliant Excellent resistance to hot solders, soldering irons, and most solvents Surface Resistivity: Top Layer: 2 x 10^6 - 10^8 ohms, Bottom Layer: 8 x 10^6 - 10^8 ohms Made of Two Layer Rubber Material 0.08 Inches Thick