Safeguard your test tubes by using Monster Rack Covers. They fit 10mm to 13mm racks for laboratory specimens. These test tube rack covers make sure that noncapped standard tubes remain safe and will not break during transportation. These lids are clear so that you can see the test tube colors and labels. Considered one of the highest quality of covers, it corresponds with other manufacturer products. The monster rack covers measure 13.5625 in. long x 9.5625 in. wide x 3.125 in. high. 

• The test tube rack covers protect uncapped test tubes
• They fit 10mm to 3mm monster racks as a secure match
• The lab tube rack covers measure 13.5625 in. long x 9.5625 in. wide x 3.125 in. high