Humboldt H-18360 6 Cast Iron Support Ring with Clamp - R5120-5

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Cast Iron Support Stand at Thomas Scientific

Humboldt H-18460 6 Plated Steel Wire Support Ring - R5160-5 - General Laboratory Supply

Iron Ring Clamp at Thomas Scientific

Ring Support, Closed, 4 Inner Diameter - Cast Iron - Eisco Labs: : Industrial & Scientific

Cast Iron Laboratory Support Ring, with Clamp, 2.5, 80mm, Karter Scientific 209R2 (Single): Science Lab Support Rings: : Industrial & Scientific

5 Diameter Support Ring with Clamp - Arbor Scientific

Ring Support, Closed, 4 Inner Diameter - Cast Iron - Eisco Labs: : Industrial & Scientific

1056-66SR - Fernco 1056-66SR - 6 x 6 Shear Ring Coupling (Cast Iron or PVC to Cast Iron or PVC)

Iron ring is supported on three legs to eliminate rocking of support

Humboldt Single-Size-Opening Tripods

Cast Iron Support Stand at Thomas Scientific

5 Diameter Support Ring with Clamp - Arbor Scientific

Lab Supplies - Clamps - Page 1 - General Laboratory Supply

Ring Support, Closed, 4 Inner Diameter - Cast Iron - Eisco Labs: : Industrial & Scientific