38mm or 1.5" (inch and a half) connection hose with screw on fitting.

59 inches (1.5m) long

This hose would typically be used to connect from the Intex pump to the fitting on the side of the pool wall.

This hose is used on large Intex pools 16ft round or bigger. Smaller pools use the inch and a quarter pipe.

Intex part number 51009