Nikon Speedlight SB-21 with AS-14 controller lens mount_Argus C3 This extension tube set provides

This extension tube set provides up to 57mm of extension in 28mm

though: this one's just for the accessories

with minor paint wear at the base corners and light wear from careful use

meant to hold a flash or similar small accessory with compatible mount

Nikon Speedlight SB-21 with AS-14 controller lens mount_Argus C3 This extension tube set providesThe Nikon Speedlight SB 21 is a macro light for Nikon cameras (or others) with 52mm front lend threads. Can this work on other lens diameters? Yes, but it only comes with an adapter for 52mm lenses which, fortunately, includes most manual focus Nikon Micro Nikkor lenses. Nevertheless, it has full manual or TTL control (on compatible Nikon film cameras) and includes a diffuser panel. In excellent condition, with softcase.