This Zoom Gear Sleeve from Ikelite enables zoom control with the Canon EF-S 18-55mm f/3.5-5.6 IS STM kit lens or Tokina 10-17mm f/3.5-4.5 lens in the 9304.52 Dome Port. This port fits onto a compatible underwater housing, such as the 6970.01 Compact TTL Housing for the Canon Rebel SL1. The sleeve/ring allows the camera with attached lens to be installed from the back of the housing, without requiring removal of the dome port. It is included with the 9304.52 Dome Port that is supplied with the housing and is offered here as a spare or replacement part. For the most complete and up-to-date compatibility information see Port Finder and Charts.