Home / German Joints / Lenz German Male 12/21 Ground Joint on 10 X 1.5 Lenz German Male 12/21 Ground Joint on 10 X 1.5 Manufacturer: Lenz Laborglas SKU: 27-M12/21-10X1.5 Price: $3.85 — In Stock German made Lenz Male 10/19 Ground Joint made using 10 X 1.5 Schott Duran tubing. Related Products 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 Lenz German Male 14/23 Bistabil Glass Ground Joint on 13 X 2.2 10/19 Female Dewar Seals on 13 x 1.5 19/26 Female Dewar Seals on 26 X 2.8 Schott 14/23 Male Bistabil on 13 X 2.2 Schott 14/23 Female Bistabil on 22 X 2.5 Schott 14/23 Female Dewar on 18 X 1.8