Features:Made of wood, sturdy construction, strong impact-resistance.Conveniently use as a drying rack for glass plates or upside-down tubes.Economical rack for applications in lab or at home.Specifications:Material: WoodModel: 6 Wells 6 PinsHole Diameter: 21mmFit for: 16-20mm tubesSize: 253mm x 63mm x 85mm / 10" x 2.48" x 3.35"(L*W*H)Package Contents:2Pcs x Tube Rack