Place a WEARWELL Static Guard Work Surface Mat 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-glare surface. 3M grounding cord must be purchased for each mat. Order the optional wrist strap for maximum effectiveness.NOTE: Custom-cut mats up to 100' long are available, call a Certified Product Specialist to order.