Product Features

  • This StonyLab 3-prong extension clamp is used to securely hold almost any type of apparatus and glassware with non-slip rubber-coated jaws

  • Constructed with an 18cm (7'') extension rod, this clamp can be attached to a lab-frame or other apparatus by using a boss head clamp

  • The adjustment screw helps provide precise pressure regulation and reduce chance of glassware breakage

  • Maximum grip size of 90mm (3.54'')


Product Options

  • 3-Prong Swivel Clamp: XL-815425

3-Prong Swivel Clamp, Multipurpose Extension Finger Style with 7 inch Rod

SKU: XL-815425
  • Processing Time

    Usually Ship in 5 - 7 Business Days. Shipping may take longer than expected during COVID-19.

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



120 Lake Ave S Suite 22
Nesconset, New York 11767


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