Lens Gear A for Cooke Speed Panchro Series II / II

This lens gear fits snugly onto the following Taylor/Hobson Cooke Speed Panchro lenses: 18mm Cooke Speed Panchro Ser. III (fits FOCUS and IRIS barrels) 25mm Cooke Speed Panchro Ser. III (fits FOCUS and IRIS barrels) 32mm Cooke Speed Panchro Ser. II (fits FOCUS and IRIS barrels) 40mm Cooke Speed Panchro Ser. II (fits FOCUS and IRIS barrels) 50mm Cooke Speed Panchro Ser. II (fits FOCUS and IRIS barrels) 75mm Cooke Speed Panchro Ser. II (fits IRIS barrel ONLY! Use "Lens Gear B" for 75mm FOCUS BARREL) 100mm Cooke Deep Field Panchro Ser. II (fits FOCUS barrel ONLY! Use "Lens Gear B" for 100mm IRIS BARREL) Made from strong & flexible plastic, these gears are plenty solid for follow-focus duties without straining the material, but just flexible enough to squeeze on to the barrel of the lens. If the fit feels too snug, you can soak the gear in hot water (then dry it off) to expand it slightly before installing. These gears work great! I use them on my own set of Cooke SPs. But note: The designer takes no responsibility for any damage to your equipment as a result of using or installing this gear.