Pen Plater Superblack Black Rhodium Solution ImpGen Positive locking backs have been

Positive locking backs have been trusted since the French introduced the ZOP system in the late 20th century—the Guardian II refines that legacy with larger

uniform scalloped edge profile

chain-sold-by-the-inch programs

80mm across the screwhead file family

Focal length is measured from the lens plate to the work surface

Pen Plater Superblack Black Rhodium Solution ImpGen Positive locking backs have beenCohler Superblack Pen Black Rhodium Solution produces a deeper, darker grey black rhodium plate on gold and other precious metals than standard black pen rhodium. Formulated specifically for pen plating, it uses a different pH and higher concentration than bath rhodium solutions to deliver crisp two tone accents, touch up repairs, and uniform dark finishes. For professional use only. Features Deeper dark finish: Rich grey black tone for bold contrast