Description: Create as large a rack as you need by linking together multiple racks Heavy-duty polypropylene racks feature a unique system of tabs and slots, which facilitate easy connection and sturdy fit Well designed with 72 holes which are used to hold centifuge tues with capacity of 0.5ml Conveniently connect end to end or side to side Specification: Material: Plastic Overall Dimension ( L x W x T ): approx. 180mm x 91mm x 54mm / 8 inch x 3.6 inch x 2.12 inch Diameter of Socket: approx. 8mm / 0.3 Inch Socket Amount: 72 Fitting for Centrifuge Tubes with Capacity of 0.5ML Color: Blue as shown in display pictures Package Includes: 1 Piece Centrifuge Tube Holder