This is a Stainless Steel Caliper made by Kodiak.  This caliper is 100% stainless steel except for the brass fittings where your brake hoses attach.  This caliper will fit Kodiak brake sets that use a 5 or 6 bolt hub.  Kodiaks part number is DBC-225-SS.  The caliper includes ceramic brake pads.  Kodiak offers a 6 year warranty on their stainless steel parts and a lifetime warranty on the brake pads.  The calipers are the most important part of a disc brake set; do NOT settle for anything less than STAINLESS STEEL.