2 Prong Dual Adjust Swivel Clamp

Size M: Maximum grip size of 65 mm (2.56 inch) Size S: Maximum grip size of 70 mm (2.76 inch) Used to securely hold apparatus and glassware like test tubes and flasks with non-slip rubber-coated jaws Build-in boss head holder for easily attaching to a lab-frame or other apparatus is adjustable by a check nut to any angle Dual adjustment screws help provide precise pressure regulation and reduce chance of glassware breakage 360 degree swivel type clamp ASIN: B07XC6JSRS, B0D5H9VY3G