kfconcept
There are two types of FD mounts
FD/FL Breech-Mount (with a silver ring, you need to rotate the silver ring when attachment and removal), breech-lock mounts are identified by the silver ring
New-FD Bayonet Mount, bayonet mounts are identified by a red dot next to the lens release button
Here are the steps to install breech-mount version
Operating the adapter
Canon Eos 1000d Lens Mount Fujifilm X Pro1 Canon Adapter Fujifilm X-pro1 Adapter Canon Fujifilm X-pro1 Canon Lens Adapter Fujifilm M-mount Lens Adapter For X-pro1 Fujifilm X Pro1 Lens Adapter Fujifilm X Pro1 Nikon Adapter Fujifilm X-pro1 Leica Lens Adapter Fujifilm X-pro1 Lens Adapter Nikon Leica M Adapter For Fujifilm X Pro1
Minolta Maxxum 400si Lens Mount Sigma Dock Sony E Mount Sony 1.4x Teleconverter - E Mount Canon 24-70 With Sigma Mc-11 Adapter Fed 5c Lens Mount Sony E Mount Legacy Lens Sony Pl Mount Lens Kit Removing T Mount From Nikon Sony E Mount 105 Sony E-mount Fe 16-35mm Gm F2.8 Oss