Clamps to the rear axle to ensure the coil does not separate from the axle under heavy articulation.Easy bolt-on installation Can be used with stock or lifted rear coil springs. Ensures the rear coils do not separate from the axle under heavy articulation.1-2 hourshttps://s3.amazonaws.com/roughcountry/install/1132.pdf2007-2018:4WD:Jeep:Wrangler JK (2 Door);2007-2010:2WD:Jeep:Wrangler JK Unlimited;2007-2018:4WD:Jeep:Wrangler JK Unlimited