43150X 4S 1-1/2” Raised Steel Plaster Ring, Dual DIR.
GANAZONO 3pcs Laboratory Support Retort Rings High-Grade Metalware Lab Equipment Supplies for Holding Glassware in Scientific Experiments and Industrial Use
VALICLUD High-grade Laboratory Support Retort Ring Metalware Oxidation-resistant Closed Ring for Lab Stand Experiments and Industrial Use
Homoyoyo Sturdy Metal Laboratory Holding Ring High-Grade Retort Ring for Experiment and Lab Stand Use Precision Crafted Corrosion-Resistant Metalware for Industrial and Factory Applications
NULYLU 80mm Open Sturdy Flask Holder Ring with Retort Clamp Screw for Laboratory Stand Beakers and Flask Heating Support Industrial Lab Equipment
YOKIVE Laboratory Stand Support Set, Chemical Resistant Steel Ring Stand Set Lab Support with Clamp Ring, Great for Chemistry Industrial Labs (16-inch Rod)
LIFKOME 3pcs Laboratory Support Ring Sturdy Iron Ring Holders Random for School Industrial Use
YOKIVE Laboratory Stand Set, Lab Support with Clamp Ring, Great for Chemistry Industrial Labs (20-inch Rod)