Durasight Z-2 Alloy Scope Rings - DuraSight™ Z2 Alloy Rings provide 50% more strength than conventional aluminum rings, but are priced about the same. Beautiful and durable matte black and silver finishes are achieved through state-of-the-art, industrial quality powder coating. All screws are Grade 8 Torx®, ensuring secure scope retention and a Torx® wrench is included. DuraSight™ Quick-Detach Adaptors, available separately, allow for the conversion of any DuraSight™ medium or high ring into a QD ring – in seconds. Weaver® compatible.