Hand Injectors with Locking Pins. 6oz Injector=$119.99 8oz Injector = $129.99 10oz Injector = $139.99 Dual 6oz injector = $315.99 Dual 8oz injector=$335.99 Dual 10oz injector=$355.99 Dual Injector Kit= $115.99 Triple 6oz Injector=$435.99 Triple 8oz Injector=$455.99 Triple 10oz Injector=$475.99 Triple Injector Kit = $159.99 Comes with 2 O-Rings