Female Coupler Nipple Showing all 2 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sale! Sioux Tools 1395 Female Coupler Nipple | 1/4″ NPT Thread Size $12.91 Original price was: $12.91.$3.87Current price is: $3.87. Add to cart Sale! Sioux Tools 1396 Female Coupler Nipple | 3/8″ NPT Thread Size $13.61 Original price was: $13.61.$4.08Current price is: $4.08. Add to cart