Technical details Product code Piece/Amb Diameter Ø 300-30001 1 1/2" 300-30002 1 3/4" 300-30003 1 1" 300-30004 1 1 1/4 300-30005 1 1 1/2 300-30006 1 2" 300-30007 1 2 1/2 300-30008 1 3" 300-30009 1 4"