13-Tube Wooden Test Tube Rack with Draining Pins, 10.25" Wide Physics_Waves & Oscillation 3g nickel-plated steel balls on

3g nickel-plated steel balls on a red wood base

this universal clamp holder accepts rods up to 20 mm in diameter and bolts securely to retort stands for oversized load support

this super-taster set pairs PTC

Triple-parallel plastic pulley with three 50mm wheels on a steel frame with end hooks

Rubber-footed 8 by 5 inch powder-coated steel base pairs with a stainless steel 60cm rod at 12mm diameter for a 3

13-Tube Wooden Test Tube Rack with Draining Pins, 10.25" Wide Physics_Waves & Oscillation 3g nickel-plated steel balls onBeech wood test tube rack accommodates 13 tubes up to 25mm diameter in a 10. 25 inch frame with draining pins for post wash inversion and drying.