Lab Jack Holder bracket x 4 + Fixing Knurled Screw x 5

• Model number: L-shaped metal bracket set
• Possible to customized with 4 types of spring length(optional).
• Mounting location of spring can be changed, preventing beakers and Erlenmeyer flasks on jack from falling.
• Several holes of L-shaped mounting fixture allows you to change mounting location of spring to make fine adjustment of spring force.
• Adding optional spring enables product to be used for various purposes such as fixing of round-bottom flasks and ensuring of stronger fixing.