Please note:
1 3/4 does not refer to the diameter of center hole , it refers to the butterfly on carburetor . The diameter of these is approx. 1 5/8
This is for 1 Filter , for a pair the quantity must be adjusted to 2 .
One Air Filter made from Stainless Steel so they won't rust, comes with a washable sponge filter ,
Filter is suitable for HS6. only fits HS6 carburetors ,
Filters are 5.5 X 1 inch approx.