1-3/4"
Browning L-075 Coupling L075
You will find that PRI Fuel Stabilizer- For Gasoline 32oz keeps your fuel stable through the seasons.
Lovejoy L-075 .500 Coupling Hub L075500 w/o KW
You will find that RITE IN THE RAIN holds up to heavy erasing without tearing.
TB Wood's 5N SF Coupling Sleeve
What stands out about Milwaukee is their consistent quality across different product lines.