※Please be sure to read the profile. Purchase constitutes agreement with the profile contents.※ Price is firm as shipping is included. This is a set of rear lens caps and body cap for Pentax K mount lenses. They are made of plastic and are compatible, but function without issue. Size: Approximately 15mm thick x 54mm diameter (rear cap) Approximately 9mm thick x 60mm diameter (body cap) How about for old lenses and old bodies? The items are new and unused. No comment, immediate purchase is welcome. Free shipping, will be sent via Yu-Packet Post Mini. Same-day shipping is generally not possible. Also, shipping is not available on weekends, holidays, and festivals. Please purchase with ample time for arrival.