This Boat Hook Tip from Star brite is constructed of unbreakable glass-reinforced nylon for years of trouble-free use. The Boat Hook Tip's special design provides easy rope handling and pickup. Inside diameter of boat hook is .771". Unbreakable glass-reinforced nylon Provides for easy rope handling Sized to fit Star brite's Extend-a-Brush handlesThis Boat Hook Tip is sized to fit Star brite's Extend-A-Brush Handles and can be found through search at number 615378