Description: 【Use Location】: Pontoon boat mudguard clips is used on 1.25inch and 1inch square tube tracks on pontoon boats. 【Function】: Boat bumper clips adjuster protects the hull, reduce or avoid hull damage caused by collision by firmly fixing the anti collision ball, protect the hull paint and structural, and extend the service life of the boat. 【Features】: Boat rail mudguard the buckle design allows the user to easily adjust the height of the anti collision ball. The design is easy to install and remove quickly, allowing the owner or crew to easily adjust or replace the anti collision ball and simplify daily maintenance. 【Rope Threading Hole Diameter】: Pontoon boat square rail mudguard hanger hole diameter 10mm 【Adapt To A Variety Of Environments】: Boat mudguard holder is suitable for different types of boats and various water conditions, whether it is a small yacht or a large commercial ship, as long as the 1.25inch and 1inch square tubes of the ship's side railings are applicable. Specification: Material: Plastic Product Size: Rope Hole Diameter 10mm Package Includes: 4 Pontoon Boat Mudguard Clips Note: Please allow slightly errors 1-2cm differences due to manual measurement.