Lens Foot LF1 is a superior alternative to Pentax original lens foot for Pentax DA* 60-250mm, DA* 300mm and Pentax Adapter Q to K. Unlike the original, it has a knob to attach or detach to the lens without using any tools. It also has a special safety mechanism to prevent accidental loosening of the clamp. The release knob is only engaged when it is pulled out from the "disabled" position.
It has 1/4" socket at the base and can be mounted to tripods or any QR plates directly. This should be fine for a small lens on Pentax Adapter Q to K. For larger lens or cameras, our lens plates (LP-70, LP-85, LP-100) is needed to form an Arca Swiss compatible lens support. LP-100 is recommended to balance the weight of long lens on Pentax Q. The overall size of replacement lens foot is much smaller than an Arca-Swiss compatible lens plate mounted to the original foot.
Well made and works well. I attached a 5 inch arca swiss plate to it and mounted on my tripod. Cheaper and much easier to find than a factory foot.