Tilta Follow Focus Ring - $7 - in stock
(FR-T03) This spare lens gear works with any follow focus with a .8 pitch gear. A low-cost adjustable focus ring, but the rubber is less flexible than the Kamerar Lens Gear.
Tilta Seamless Focus Gear Ring 72-74 mm - $4 - in stock
Tilta Seamless Focus Gear Ring 69-71 mm - $4 - in stock
Find Follow Focus and accessories here