Place WEARWELL Static Guard Work Surface Mats under micro-circuitry components to protect sensitive parts from damaging static electricity. Surface to surface and surface to ground resistivity are 10-7 ohms. Abrasion-resistant non-glar surface. 3M grounding cord must be purchased for each mat. Made in USA.NOTE: Custom-cut mats up to 100' long are available, call a Certified Product Specialist to order.