United Scientific Cast Iron Support Ring is a cast iron, zinc-plated support ring with boss head clamp and thumbscrew. Distance from support to center of ring is 4-1/2 inches. Ring is 4 inches in diameter. Shipping Details Shipping Type: parcel Free Shipping: true Specifications Number Of Rings: 1 Ring Maximum Age: 18 Years Maximum Grade Level: Grade 12 Rod Material: Zinc-Plated Steel UPC: 885634203788 Allergens: Contains No Allergens Certifications: Not Applicable Grade Level: Middle-High School SUOM Description: Each Brand Name: United Scientific Base Type: Cast Iron Base Description: Ring – 4 in. Diameter
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