A. Our ties meet most basic cable tie needs, with choices covering a wide range of requirements for size and strength. One-piece, injection-moulded construction provides maximum strength and adjustability for securing all sizes of bundles. Extra features such as rounded edges and bent-tip design make installation easy, fast, accurate and secure.B. Split mandrel, loop tensile strength tests show that the most vulnerable stress point for a nylon cable tie is its pawl. There is a trade-off between insertion / pull-up ease and strength of a cable tie. The stronger the pawl, the more force is required to insert and pull up the strap as it engages the pawl teeth. Cable ties are designed to optimize insertion ease and still meet or exceed all applicable strength requirements. We use CAD / CAE & CAM process to design four tooth locking.C. Refer to left SKETCH, the magnified cross-section illustrates our full four-tooth locking engagement between strap and pawl under load. This intimate contact between pawl and strap teeth ensures that the strength of the pawl is fully utilized.