These PVC coated steel, half size, stationary, test-tube and microtube racks holds up to 24 test tubes size 22-25 mm. They measure 7" l x 5" w x 4" h (12.7 x 17.8 x 10. 2cm). The microtube rack is 1.7" h = 4.3 cm. All racks include hardware for easy attachment to an accessory/platform (sold separately).
Our test tube rack selection guide explains how many of each size rack will work with your particular shaker platform.