1/4" - Thread diameter of 12mm
3/8" - Thread diameter of  15mm
1/2" - Thread diameter of 19mm
3/4" - Thread diameter of  24mm
1" - Thread diameter of  30mm
1.1/4" - Thread diameter of  39mm
1.1/2" - Thread diameter of  46mm
2" - Thread diameter of  56mm
For Copper Pipe

Also available in Chrome Plated