Compatible with the Send iT MV3 Scope Level. Positions the Send iT MV3 vertically to the side of the scope tube. Can be mounted to the left or right side mounted to a section of Picatinny rail. Requires 0.3″ of clearance between the scope tube and the top of the Picatinny rail. This mount will not accept the Send iT original or the XSL it is only comparable with the MV3 model. *MV3 90 Mount recommend for most 34mm scope tubes and under. Clearance for up to 1.55/39mm diameter eyepiece/tubes.