USED This is a used plastic starfish hose holder/adjuster. The starfish is 1 1/4" long and wide, and 1 1/2" tall. The inner diameter of the hose guide is 7/8". This is designed to be especially helpful in a parallel parlor with 5/8" and 3/4" milk hose.
The manufacturer and part number for the starfish hose holder are unknown.