Product Features


  • 4 pronged with maximum clamp opening of 100 mm (3.94 inch)
  • Used to securely hold almost any type of apparatus and glassware with cork coated jaws
  • Constructed with extension rod, this clamp can be attached to a lab frame or other apparatus by using a boss head clamp or similar tool
  • The adjustment screw helps provide precise pressure regulation and reduce chance of glassware breakage
  • Warranty: StonyLab 1-year limited warranty; If received damaged, please contact us immediately; we will solve it until satisfied


Product Options



4 Prong Adjust Swivel Clamp, 4 Prong Lab Clamp with 100 mm Max Opening

SKU: XL-815778

    Customer questions & answers



    Just received it. Haven't heated, or dropped, it yet. The interior diameter of the opening is 1 3/8 in, or 34.9 mm, which means a #8 stopper should work.<br><br>No visible bubbles or deformations.

    Brandon Shelton

    First things first, if you do decide to purchase this to use with a Buchner funnel you are absolutely going to need adapters or cones for your funnel. If you search "buchner funnel adapters" on here you should be able to find them.<br><br>Glass arrived with no visible defects. Have used several times with a glorified aquarium pump and Buchner funnel for distillation and making tinctures. Works without issue, but the mouth of the flask is quite large and Buchner funnels tend to run "thin." To remedy this just buy adapters.

    Dawood Ajmi

    BROKEN!! ITEM ARRIVED BROKEN, Shattered Glass Allover the Package!!!

    Evan Clinthorne

    Great value. Works as needed. Minor imperfections that do not impact use.

    Jason huston

    Cracked Bad rubber .I don't think this is rubber it is flaky dry garbage that will drop crumbs of rubber into your expierament