Quick Change Coupler Showing all 3 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sale! Sioux Tools 1391B Quick Change Coupler | 1/4″ NPT Thread Size $57.34 Original price was: $57.34.$17.20Current price is: $17.20. Add to cart Sale! Sioux Tools 1392B Quick Change Coupler | 3/8″ NPT Thread Size $83.67 Original price was: $83.67.$25.10Current price is: $25.10. Add to cart Sale! Sioux Tools 1393 Quick Change Coupler | 1/2″ NPT Thread Size $99.76 Original price was: $99.76.$29.93Current price is: $29.93. Add to cart