Panduit BT2I-M0 Cable Tie, Metal Barb, Intermediate, Weather Resistant Nylon 6.6, 8.0-Inch Length, Black (1,000-Pack) Greater resistance to damage caused by ultraviolet light  indoor or outdoor use Dome-top head features unique patented design with round, smooth edges Stainless steel locking barb provides consistent performance, reliability and infinite adjustability through entire bundle range High strength and low thread force Curved tip is easy to pick up from flat surfaces and allows faster initial threading to speed installation