Whatman HARRISUNI-CORE Punch 6.0MM PK4 WB100040 HARRISUNI-CORE Punch 6.0MM PK4. 0MM PK4 HARRISUNI-CORE Punch 6.0MM PK4 is a reliable and dependable addition to the Whatman Laboratory Apparatus family of products. Combining top-notch and uncompromising...