3Monkeez Scraptrap. 50mm BSP Connection.

50mm MI BSP Connection: This indicates the size and type of connection used, commonly found in plumbing systems. "50mm" refers to the diameter of the connection, while "MI BSP" stands for Male Iron British Standard Pipe.
Includes fixed strainer, removable basket, and plug: This suggests that the component comes with multiple elements for filtration and drainage. The fixed strainer likely serves as the primary filtration device, while the removable basket provides an additional layer of filtration and can be easily cleaned or replaced. The plug allows for temporary closure of the drain when needed.
4mm diameter strainer holes: Specifies the diameter of the holes in the strainer, indicating the size of particles that can pass through. Smaller holes typically provide finer filtration, preventing smaller debris from entering the drain system.
Can be retrofitted to 50mm outlet: Indicates that the component is designed to be compatible with existing 50mm outlets, allowing for easy installation or replacement without major modifications to the plumbing system.