20 Metal Alloy Specimen Set in Die-Cut Case Lab Equipment_Water Stills Pack of 10 rubber stoppers

Pack of 10 rubber stoppers features single hole with 27 x 31 x 32mm dimensions for tubing pass-through and laboratory vessel sealing

125-inch outer ring and a thumbscrew rod grip from 5/16 to 5/8 inch for small-apparatus support

Decade capacitance box stepping 0

Rod-mounted full-size skeleton pairs bare bone on one side with painted muscle origins and insertions on the other for skeletal and myology teaching

20 Metal Alloy Specimen Set in Die-Cut Case Lab Equipment_Water Stills Pack of 10 rubber stoppersTwenty specimen metal alloy collection supplied in a die cut case with each sample individually labeled, sized for materials science comparison of composition and properties.