These are not sold as a set. The link to the One Hundred Concepts ScopeCap Rear is at the bottom of the product page.
The ScopeCap is a simple, rugged, and low profile solution to protect your scope’s lenses and eliminate any reflections from them. The signature flipper tab is integral to the ScopeCap and allows for fast and easy removal from your scope’s bezel. When doffed, they have a lower profile than traditional flip style scope caps.
Sizing:
• Small: 1.125″
• Medium: 1.25″
• Large: 1.40″
This ScopeCap is meant for the Front (Objective) lens of the scope, IE the lens away from the shooter