PowerGRP GRP-SB418N Cbl Tie NAT Stl Barb 4 IN 18lb (100 EA)
https://nsiindustries.com/product/4-natural-steel-barb-18lb-cable-tie-100-pack/
PowerGRP cable ties are guaranteed rugged and powerful, with professional-grade strength and a versatile design. The steel barb locking mechanism provides a secure grip with unlimited positions in heavy-duty application.