Supplied with 45 mm base thread, 120 mm delivery jet and stopper, 350 mm feed tube, alternative screw-type volume setting button, three bottle neck adapters (32, 38 and 40 mm), QC Certificate and operating Instructions. The dispensers are very easy to disassemble and clean. Dispensers are very easy to calibrate in the Lab. The calibration mechanism with integrated key is located under the plunger cap. The Instructions are engraved for fast and correct setting. Access to this mechanism is protected by a calibration seal sticker.