Home / German Joints / Lenz German Female 14/20 Ground Joint on 13 x 2.2 Lenz German Female 14/20 Ground Joint on 13 x 2.2 Manufacturer: Lenz Laborglas SKU: 27-F14/20-13X2.2-MAIN German made Lenz Female 14/20 Glass Ground Joint made on 13 X 2.2mm Schott Duran tubing. Related Products Schott Male 14/23 Ground Joint on 13 X 1.5 Schott Female 14/23 Ground Joint on 17 X 1.8 Schott Male 19/26 Ground Joint on 17 X 1.8 Schott Female 19/26 Ground Joint on 22 X 1.8 Schott Male 19/26 Bistabil Ground Joint on 16 X 2.5 Schott Female 19/26 Bistabil Ground Joint on 26 X 2.8 Lenz German 14/23 Male Uber Glass Ground Joint on 16 x 2.5 Lenz German 14/23 Female Bistabil Glass Ground Joint on 22 x 2.5