BT 114mm Threaded Adaptor Rings

These threaded adaptor rings are an essential tool for adapting smaller lenses for use with 143mm outer-diameter matte boxes and 114mm rubber donuts.

Designed with durability in mind, the adaptor rings reduce the rear opening of rubber donuts such as B1250.1001 – 143mm–114mm Rubber Donut with 138mm Retainer without light leaks or interference.

Custom Fit – Use smaller outer-diameter lenses, the adaptor rings help you step them up.
Fits with Misfits – The adaptor rings work with all of our matte boxes including the Misfit Atom and Misfit Kick Mk II.
Compatible with Donuts – The rings are compatible with rubber donut rings for reduced light leaks.
Durable Delrin Design – The threaded adaptor rings are wear-resistant and designed for maximum durability.
Broadcast Alternatives – For broadcast shooting, use the alternative Threaded Adaptor Rings for ENG Lenses.