Phenix 28-70mm 1:35-4.8 PK mount, The lens aperture seem to work fine Sorry no end caps. Please see photos.
Garsent 52mm 2X Telephoto Lens, 52mm Camera Teleconverter with 62mm Front Thread for Lens Filters, Lightweight Aluminum Alloy 2X Magnification HD Teleconverter for 52mm Mount Camera
Ausla 52MM 2X Aluminum Alloy Magnification Lens, High Definition for 52MM Camera Lenses and Accessories
EF40mm f/2.8 100D 52mm Camera Lens Shade Replacement ES-52 Lens 52mm Lens Cap Aluminum Alloy
Phenix 28-105mm f3.5-4.5 MC Zoom Lens for Pentax PK
Phenix DC303N Pentax K-Mount SLR Camera with 50mm F1.7 Lens ,Tokina 28-70 Lens
SUPYINI 52mm 2X Telephoto Lens, HD Aluminum Alloy Conversion Lens with 52mm Mount Thread, for DSLR Cameras 18-55mm Length
