This is the good Metco NHRA approved driveshaft safety loop. It can be either welded or bolted in using the provided grade 8 hardware. I bought it several months ago and decided not to install it. Comes with all hardware and illustrated installation instructions. Sells for $120 plus sometimes inflated shipping. Buy this one for $90 plus actual shipping cost from me to you. I'm in Mount Dora, FL 32757. Package weighs 5.7 lbs. https://metcomotorsports.com/mdl1100 Here is the actual Metco Safety Loop I'm selling.