Tilta Seamless Focus Gear Ring (56 to 58mm) TA-FGR-5658 B&H
Follow Focus Gear for any lens
Follow Focus Gear Ring | CINE-PRO Seamless Metal Focus Gear for Canon FD 50mm F1.4 S.S.C. – CinemodMaster
Follow Focus Gear for FF-T05 - 6mm 0.8mm 64-tooth | Tilta
Follow Focus Gear Rings (seamless flexible) for Vintage, Lens mod | eBay
ZEISS Lens Gear | Attached in a flash
Amazon.com : NEEWER Mini Follow Focus with A/B Stops, Lens Gear Ring, 15mm Rod & Rod Clamp for Cinema Camera, DSLR/Mirrorless Camera, Compatible with Lens Diameter Up to 114mm, PG001 (Silver) :
ZEISS Lens Gear (Mini) 2174-298 B&H Photo Video
ZERO Follow Focus Lens Gear - Indie Cinema Academy
DIY perfect, seamless Lens Gears for Follow Focus - YouTube
Amazon.com : SmallRig Seamless Focus Gear Ring (72mm to 74mm) - 3293 : Electronics
Lux Gears - A Follow Focus Lens Gear With Compression Fit – Cool-Lux