Explore Scientific T Shaped Finder Scope Base w/ Screws. The Explore Scientific T-Shaped Essential Series Finder Scope Base w/ Mounting Screws is sturdy and comes with reliable mounting screws for easy installation. Specifications for Explore Scientific T-Shaped Essential Series Finder Scope Base w/ Mounting Screws: Weight: 1.29oz Length: 50mm Width: 51mm Height: 25mm Package Contents: Explore Scientific T Shaped Finder Scope Base w/ Screws Explore Scientific T Shaped finder scope base for Essential Series Telescopes with screws.