This is a set of 5 phot r 200pl quick release plates which is for ball heads it is ideal to attach a camera to a product which uses the ball head attachment the lightweight aluminium construction of the plate allows you to attach it to your camera without adding any noticeable weight or size the 200pl comes with a attachment which make sit compatible with a large number of camera models on sale today this allows you detach the plate from head and easily attach it to another head or su