1/2″ X 20 UNF POWER COIL

1/2″ X 20 X 1.5D UNF POWER COIL

1/4″ X 28 UNF POWER COIL KIT

1/4″ X 28 X 1.5D UNF POWER COIL

3/8″ X 24 UNF POWER COIL

5/16″ X 24 UNF POWER COIL KIT

7/16″ X 14 – 1.5D UNF POWER COIL