About this item

• Versatile Size Compatibility: fits 50 to 500 ml flasks, accommodating various laboratory needs with a size error of approximately 2-4 mm
• Sturdy Construction: vinyl-coated for non-slip grip, corrosion resistance, and chemical durability, ensuring secure stability in water baths or troughs
• Dual Diameter Design: inner diameter options is 1.89 inch; and outer diameters is 3.35 inch
• Glassware Protection: designed to stabilize glassware without scratching, maintaining integrity during experiments or procedures
• ASIN: B0D8HMH43V, B0D8HLZBM5