Laboy Stainless-Steel Pinch Clamp with Screw-Lock for 50/30 Ball Joint or #30 O-Ring Joint, Heavy-Duty Lab Clip for Large Vacuum Glassware

This Laboy stainless-steel pinch clamp is a heavy-duty size 50 clamp for large spherical and O-ring joints. The screw-lock design gives strong, adjustable clamping force, while the polished stainless-steel construction offers excellent chemical resistance and a smooth surface that will not easily damage glass.Size 50/30 fits 50/30 spherical ball joints or #30 O-ring joints, making it suitable for large flasks, condensers and receivers in distillation and high-vacuum systems.Note: the clamp secures the joint but does not replace laboratory stands, rings or other structural supports for the glassware assembly.

• Heavy-duty stainless-steel pinch clamp with screw-lock design for large spherical and O-ring joints
• Bright polished stainless surface is smooth, corrosion-resistant and helps protect glass from scratches
• Sized to fit standard 50/30 spherical ball joints or #30 O-ring joints used on large glass components
• Ideal for assembling large distillation, vacuum or inert-gas systems where secure joints are critical
• Designed to secure joints only; always use appropriate stands and supports for the complete glass setup