Designed to work exclusively with Spot Hogg's ROTI sight housing, the ROTI pin insert allows you to transform your scope picture in seconds. You no longer need different scopes or sights for hunting, 3D, and TAC shoots - with the ROTI insert, your scope becomes modular for all your adventures. FeaturesPin Sizes: .010" , .019" Pin Orientation: Single, doubleDesigned to work exclusively with Spot Hogg's ROTI Sight