ข้อต่อท่อ - รูปทรงหัว - สี่เหลี่ยมจัสตุรัส วัสดุ - PA ; สี - สีดำ

This Square Insert is designed to provide a tight-fitting connection on a square tube or pipe end while preventing scratches or damage to floors and other surfaces. It also protects the tube from contaminants while fitting and providing the best grip possible. It is black and made of Nylon material.