TY27MX Cable Tie 120lb 13" UV Black Nylon with Stainless Steel Locking Device Bulk Pack, Military Specified (MIL-SPEC MS3367-3-0) 500 Per Bag Oval low profile head is designed to prevent snags on uneven surfaces and easier to pull through bulkheads. Non-magnetic stainless steel locking device insures both maximum strength and the right tightness every time. Because there are no notches, Ty-Rap ties provide an infinite number of locking positions while fastening the tie at the precise bundle diameter needed MS3367-3-0 TY27MX THOMAS & BETTS