Megladon Manufacturing HLC® SCRATCHGUARD® Test Reference Cables are high-performing reference-grade cables designed to be the ideal assembly for testing fiber optic connectors. All components for the HLC Reference Cables are carefully selected, from the precision-drilled ferrules to controlled core glass, to ensure high performance from the assembly. Applying a patented HLC termination process to every connector creates high optical performance (IL and ORL) and unsurpassed end face durability. The extended durability of the HLC connectors ensures better test data over extended use and reduced expense in product testing.