Used windage tray.  This sits in the oil pan attached to the main cap studs.  If you are adding a windage tray to your engine, you will need to replace the bolts with bolts for a windage tray (not included).  Good condition.  Fits the following:

84-96 Corvette w/ 350 TPI w/ LT1
93-97 LT1 V8 Camaro
93-97 LT1 V8 Firebird/Trans Am

The item in the photo is the actual item being sold.