The Teradek Pre-Marked Focus Ring Set is designed for professional focus pullers who demand accuracy and efficiency on set. Each ring is precision-engineered to fit the CTRL.1 and CTRL.3 wireless lens controllers, providing pre-marked distance scales for popular lenses in both imperial and metric measurements. These rings eliminate the need for manual marking, enabling rapid lens swaps and consistent focus pulls without guesswork. Constructed from durable, lightweight materials, the rings maintain their shape under rigorous production conditions and offer a secure, slip-free fit. Ideal for fast-paced environments, this set ensures smooth transitions and reliable performance, making it an essential accessory for any Teradek RT system.