Othmro Test Centrifuge Tube Holder Rack Description Acrylic Clear Test Tube Centrifuge Tube Rack Holder for Made of high quality plastic material in clear color, designed with 50 well, Ideal for laboratory, can provide clear view of the tube contents and convenient insertion and removal of tubes.Hand Wash Only Specification Outside size:178x96x54mm Number of holes:50 well Material:Plastic Color:Blue Package content:2pcs x Test Centrifuge Tube Holder Rack Note: 1.Please place the test tube rack on a spacious and flat table to prevent the test tubes from falling 2.Hand Wash Only 3.Please refer to the picture and select right type before your order Note: 1.Since the fixing method is different for each item,the user should plan the machining and fixing method 2.Please refer to the picture and select right type before your order