Revolver injector

* Spec/increments: 10ml: 0.25,0.5,1ml;
                                    20ml: 0.5,1,2,3,3.5ml;
                              30/50ml: 1,2,3,4,5ml
* Nickel-plated zinc-alloy handle and brass body
* Glass barrel and luer lock adaptor
* Dosage is adjustable