SEIWEI 3 Pcs Lab Support Retort Ring Open Extension Ring Brace with Smooth Surface for Rotating Stand Laboratory Support, Easy to Use (140 mm)

Features:Premium MaterialThe support ring is made of stainless steel, ensuring its durability, corrosion resistance, rust resistance and strong constructionSophisticated DesignThe screw design on the top of the support ring can ensure that it is firmly fixed on the iron stand to prevent shaking and facilitate your operationSmooth SurfaceThe surface is smooth and burr-free, with excellent hand feeling, preventing you from scratching your hands during operationSize OptionalThere are a total of 5 different support rings for you to choose, the outer diameters are 60 MM/2.36 Inches, 80 MM/3.15 Inches, 100 MM/3.94 Inches, 120 MM/4.72 Inches, 140 MM/5.51 InchesWide ApplicationOften used in laboratories, factories, hospitals, schools, and other situationsSpecification:Material: Steel, PlasticColor: as ShownOuter Diameter: 60 MM/2.36 Inches, 80 MM/3.15 Inches, 100 MM/3.94 Inches, 120 MM/4.72 Inches, 140 MM/5.51 InchesPackage Included:3 PCS* Support Ring