Heavy-Duty Zinc Alloy Bosshead for Rods up to 16mm Plastic Labware_Plastic Burettes Double-parallel plastic pulley with two

Double-parallel plastic pulley with two 50mm wheels in a steel frame and end hooks

Zinc alloy right-angle boss head with non-toxic powder coating joins rods up to 16mm at 90 degrees

replacing the dry-cell stack on student-circuit benches

Hand-painted skin cross-section enlarged 300 times exposes epidermal layers

giving students a wide reference range for density analysis

Heavy-Duty Zinc Alloy Bosshead for Rods up to 16mm Plastic Labware_Plastic Burettes Double-parallel plastic pulley with twoCast in powder coated zinc alloy at thick gauge for high torsional strength, this heavy duty bosshead holds a support rod and a perpendicular rod in a rigid screw adjustable grip.