PowerGRP GRP-222500 Cable Tie 22 IN 250Lb Blk (50Pk)
https://nsiindustries.com/product/22-black-super-heavy-duty-250lb-cable-ties-50-pack/
PowerGRP cable ties are guaranteed rugged and powerful, with professional-grade strength and a self-locking design. The traditional serrated locking mechanism provides a secure grip and the bent tip allows for easy insertion.