About this item

• Size L: Maximum grip size of 90 mm (3.54 inch)
• Size S: Maximum grip size of 32 mm (1.26 inch)
• This StonyLab 3-prong extension clamp is used to securely hold almost any type of apparatus and glassware with non-slip rubber-coated jaws
• 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
  
• ASIN: B07XG77YVG, B0D78FCJMN