Excellent option for post wash draining of tubes & bottles in the laboratory Each peg measures 14 cm in length and 10mm in diameter, and can be added or removed as needed. Simply insert the peg into one of the 20 holes tighten down with the included screw nut. Pegs placements are 6.5 cm apart. Draining rack comes with a collection tray at the bottom. The collection tray has an extension for accepting a drain tube (5 mm ID) so that the waste fluid can be collected in a container. Rack Dimension: 20.25x13.8x2.5 inches Wall mounting accessories and drain tube are not included.