Heavy Duty Brass Sink Strainer fits sinks from 3 1/2 to 4-inch openings.  Chrome Plated with a solid brass body gives you the perfect choice for your next kitchen plumbing project.  Designed for long lasting reliable quality and durability.  ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. p65warnings. ca. gov. 
  Heavy Duty Sink Strainer with Chrome Plated Solid Brass Body:
Fits sinks with 3 1/2" - 4" opening
Chrome plated solid brass body and brass nut
4 1/2" flange with brass nuts
Rolled edge basket with ground joint seal
Heavy duty