Surface resistance: 10E5-10E9 (5-9 power side)
Friction voltage: less than 100V (can be used after dilution water test)
Material: anti-static plastic
Style: punch type
Specifications: 3 inch (75MM) / 2 inch (50MM)

Instructions for use: professional for anti-static workshop / anti-static clean room storage collection of documents,

important drawings, back wide and thick design can store more files at the same time.