Your calipers are cleaned and inspected, honed and fitted with new piston seals and dust boots. Your cores are rebuilt and shipped back. Please allow 2-3 weeks for the process. Pads and retainers not included. Please call before sending and get an RA# before shipping to us. Any pistons that are not reusable will be replaced with new stainless steel pistons for an additional $10.00 each.R.H. Core Required