Material

•  aluminum (1)
•  cast iron (1)
•  stainless steel (1)
•  steel (1)

Internal thread (inches)

• 4 (3) 

  1/2 (1) 1/4 (3) 1/8 (5) 3 (3)

External thread (inches)

• (no filter) 

  2 (2) 4 (3)