The Cokin H210 set includes the Cokin P BP-400 holder and 3 filters: P037 - 81EF insulating, P123S - half blue B2 and P197 - sunset 1. Cokin filters are mounted using a holder (holder) attached to replaceable mounting adapters, with diameters that can be adjusted to your lens. The P system is recommended for compact system cameras with interchangeable optics (mirrorless) and amateur SLRs with APS-C matrixes used with kit or long focal length lenses. It can also be used with small video cameras. In order for the set to be fully functional, you should also purchase a Cokin P ring (adapter) with the appropriate diameter.