Set of (4) 10.9 Class (Metric equivalent to Grade 8) hardened yellow zinc plated flange bolts to replace Mopar 6104414AA on 2007-2018 Wrangler JK and 2018-current Wrangler JL. On JK these are most commonly used to attach the rear bumper brackets to the bumper (4 needed), to attach the rear bumper brackets to the frame (4 needed), and to attach the front bumper metal brackets to the plastic bumper cover (4 needed). On JL these are most commonly used to attach the rear bumper brackets to the frame (4 needed). These have other uses on JK JL as well including: Trailer hitch wiring - bracket to frame (2 needed), front plastic air dam to frame (2 needed), front metal skid plate to frame (4 needed), rear bumper bracket to crossmember (2 needed), rear bumper to frame (6 needed). Sold by a small business in the US. Set of (4) 10.9 Class (Metric equivalent to Grade 8) hardened yellow zinc plated flange bolts to replace Mopar 6104414AA on 2007-2018 Wrangler JK and 2018-current Wrangler JL. On JK these are most commonly used to attach the rear bumper brackets to the bumper (4 needed), to attach the rear bumper brackets to the frame (4 needed), and to attach the front bumper metal brackets to the plastic bumper cover (4 needed). On JL these are most commonly used to attach the rear bumper brackets to the frame (4 needed). These have other uses on JK JL as well including: Trailer hitch wiring - bracket to frame (2 needed), front plastic air dam to frame (2 needed), front metal skid plate to frame (4 needed), rear bumper bracket to crossmember (2 needed), rear bumper to frame (6 needed). Sold by a small business in the US.