Maxon Auto Corp. 3" x 10" Polished Stainless Steel Radiator Overflow Tank Catch Can 32 OZ Made of high quality stainless steelPolished Surface Bolts Center-to-center distance is 7.5" 32 oz Capacity 3" cylinder diameter, 10" tank body length, Cap thickness is extra 0.5" Note: The connections are 3/16 od. And include instructions stating the cap is left hand threads opposite any automotive standard.