DWK Life Sciences (Kimble) Tooled Neck Vial with Unattached Polyethylene Closure, 12 ml, 50 mm H . Tooled Neck Vial, 12 ml, 21 OD x 50 mm H, Clear, Borosilicate Glass, With Unattached Polyethylene Closures, Open-Bottom Closure, Necks are Tooled for an Accurate Fit, Supplied with Closed-bottom, Two-piece Closures