Anello adattatore per obiettivo Canon EF-S 55-250mm f/4-5.6 IS STM a parte di montaggio in metallo EF;

Compatible Lens Model: For EF-S 55-250mm f/4-5.6 IS STM Lens. The adapter's design accommodates different versions of the EF-S 55-250mm lens, including those with an ultrasonic motor shaft, and includes a hole that can be sealed with black tape to prevent dust entry if not needed.

eBay