Some cars already have an anchor fitting fitted. If you're doesn't - then this kit is designed to be retrofitted into your vehicle to allow anchoring the tether strap of a child restraint to the vehicle. See car owners handbook for anchor point locations and details of part required.
This package includes: 30mm bolt 5/16 unc grade 5, 5mm spacer, 10mm space anchor fitting, lock washer, securing nut and reinforcing plate.