BOG Deathgrip Mounting Block Fits All Deathgrip Models. Now that same rock-solid platform can support your spotting scope with the DeathGrip mounting block built specifically to fit the fixed-head DeathGrip that hunters everywhere swear by. Whether you're scanning ridgelines or tracking movement across a valley this block lets you lock in your optics with confidence. Specifications for BOG Deathgrip Mounting Block: Manufacturer: BOG Additional Features: Fixed 1/4-20in Stud with 3/8 Adapter Features of BOG Deathgrip Mounting Block Fits Whide Range Of Optics And Accessories Tool Free Installation Makes Rifle To Optic Switch Easy Lightweight and Durable Package Contents: BOG Deathgrip Mounting Block BOG 1237290: Deathgrip Mounting Block Fits All Deathgrip Models