“Mister B Pumps are British Vacuum Pumps with a very good performance and long durability. Being a one hand pump, it can be operated by one hand only, so you have your other hand free to hold the cylinder in place.Maximum vacuum capacity 0.25 bar (approximate), so this Mister B Pump can draw no more than 75% of air out of a cylinder which is relatively body safe. Of course as with all vacuum toys: listen to your body and don’t overdo it, build up slow.Mister B Pumps available both with and with a pressure meterMade in the UK to the highest standardsTube and connector for cylinders includedCan also be used on LAPD, Dr Kaplan and Boston Pump cylindersAlso suitable for wet pumping”