Laser-marked Preston HU3/HU4 Rings

These aluminum focus rings for the Preston HU3/HU4 are black anodized and laser-marked with the pre-mapped A-E lens mapping markings. The high-contrast markings are easy to view in any lighting condition. These aluminum rings will mount and remove from your handset with ease in cold weather conditions unlike the stock Delrin rings which can be finger-busters in sub-zero temperatures! These are an ideal replacement or upgrade from the stock Preston rings.

These are available in complete sets of five (A-E), and in imperial feet markings only.