Hejnar Photo precision aluminum extension spacer block for Metabones Gen 2, 3, and 4 Canon EF to Sony E-mount lens adapters providing extended tripod and L-bracket clearance. Hejnar Photo modular Arca-Swiss compatible L-bracket for Metabones adapters featuring a detachable side vertical component. 10-Inch Hejnar Photo Arca-Swiss compatible lead screw micro focusing rail with rapid-positioning release button and modular 4-position clamp.