The arrowhead design of these ties offers a low insertion force and a high extraction force. The foam rubber seal provides additional protection against moisture and debris. One-piece mounting ties offer a complete solution by simultaneously bundling and mounting cables, wires and hoses. 1-Piece Cable Tie/Arrowhead Mount with Seal, 6.3" Long, 50lb Tensile Strength, PA66HS, Black, 500/bag.