Canon Extender EF 1.4x II lens mount_Topcon This heavy duty slide bar

This heavy duty slide bar kit includes two 18" Heavy Duty Slide Bars

without helicoid

good question

but the in-body focal plane shutter is not working

Canon Extender EF 1.4x II lens mount_Topcon This heavy duty slide barCanon Extender EF 1. 4x II teleconverter, in excellent cosmetic condition. Increases the effective focal length of the lens mounted to it by forty percent while maintaining complete communication between lens and camera. Since the teleconverter extends into the back of the lens, not all lenses may be mounted. Please confirm compatibility between your intended lens and this teleconverter. Clean glass and excellent function. Includes pouch.