Neewer FC-16 Wireless Trigger Set  type_Tripod & Mounting The Manfrotto 501PL plate is

The Manfrotto 501PL plate is a common plate style for video applications

but can be used on any K mount camera without AF

4 is a fast standard lens for Pentax K-mount cameras

It's semi-coupled

some may have minor cosmetic wear

Neewer FC-16 Wireless Trigger Set &nbsptype_Tripod & Mounting The Manfrotto 501PL plate isThis Neewer set includes transmitter and receibver units which can be used to trigger flashes or cameras. There's a hot shoe on the receiver, and a connection for wired flash; the transmitter fits into any standard hot shoe and has a button up top for use as a standalone remote. Includes wired adapters for PC sync, 2. 5mm microplug, Nikon DC2 and 10 pin connectors. Runs on standard AAA batteries (not included)