4-Prong Cork-Lined Clamp on Stainless Steel Rod, 4.1" Max Lab Equipment and Supplies_Safety Supplies 5 inches each supports crafting

5 inches each supports crafting projects

Heavy-duty spring-loaded three-finger jaw with dual-screw fine adjustment mounts on a swivel boss head accepting 18mm rods

and classroom projects

One-inch brass ball that threads onto a pendulum string as a heavier metal counterpart to aluminum or steel balls in mass-dependent periodic-motion investigations

Spring-clipped metal frame on a mounting rod grips gratings

4-Prong Cork-Lined Clamp on Stainless Steel Rod, 4.1" Max Lab Equipment and Supplies_Safety Supplies 5 inches each supports craftingCork lined four prong jaws cushion beakers, Erlenmeyer flasks, test tubes, and burettes up to 4. 1 inches, attached to a 10mm diameter 5. 5 inch stainless steel connecting rod.