Free Express Shipping! Simmod SIMple Fit Follow Focus Gear (XXL, 10mm) Durable Aluminum Focus Gear, Fits 78-83mm Lens Barrel Diameters, 102mm Outer Diameter, 10mm Width, 0.8 MOD, 32-Pitch Gear, Includes Shim Tape, Compressible Inserts, Includes 2...