This is a tray to catch and divert the water that leaks into the engine compartment thru the seam in the windshield cowling. There are two versions - they both work pretty much the same. Version 1 uses a nylon tubing adapter and is available for either 3/8" or 1/2" tubing. Version 2 only works with 1/2" tubing. These are printed to order, using PETG. Hardware and tubing are optional add-ons. Bolts to the metal flange as shown in the pictures.