Hand Injectors with Locking Pins. 
2" diameter injectors
8oz Injector  = $155.99
12oz Injector=$169.99
16oz Injector = $175.99
20oz Injector = $185.99
Dual Kit only = $115.99
Dual 8oz Injector = $369.99.99
Dual 12oz injector = $389.99 includes 2 injectors and kit
Dual 16oz injector=$409.99 includes 2 injectors and kit
Dual 20oz injector=$429.99 includes 2 injectors and kit
All injectors Comes with 2 O-Rings