Test Tube Holder Stainless Steel Wire Tube Rack Test Tube Stand For Tube Diameter 23mm/24mm/25mm/25.5mm 50 Wells 1 / PK Test Tube Holder Stainless Steel Wire Tube Rack Test Tube Stand For Tube Diameter 23mm/24mm/25mm/25.5mm 50 Wells 1 / PK. Sale price : $23.53 Category : Office & School Supplies