Hand Injectors with Locking Pins. 4oz Injector Series 1 = $105.99 6oz Injector=$115.99 8oz Injector = $125.99 10oz Injector = $135.99 Dual 4oz Injector Kit = $299.99 includes 2 Injectors and kit Dual 6oz injector = $310.99 includes 2 injectors and kit Dual 8oz injector=$329.99 includes 2 injectors and kit Dual 10oz injector=$349.99 includes 2 injectors and kit Dual Injector Kit= $115.99 only the kit Triple 4oz Injector Kit = $409.99 includes 3 Injectors and kit Triple 6oz Injector=$429.99 includes 3injectors and kit Triple 8oz Injector=$449.99 includes 3injectors and kit Triple 10oz Injector=$469.99 includes 3injectors and kit Triple Injector Kit = $115.99 only the kit All injectors Comes with 2 O-Rings