The Butler Creek Flip Open 47 Objective, Clam 30470 is designed to protect your scope's objective lens from dust, moisture, and debris. Compatible with S& B PMII 5-25 x56 scopes, this flip-open cover features a watertight and airtight seal, ensuring optimal lens protection. The custom fit friction mounts anchor securely to your scope, while the silent spring hinges allow for quick and quiet operation. Made from durable polymer, this objective cover offers reliable protection in various weather conditions Butler Creek Flip Open 47 Objective, Clam 30470