Bulk package of 216 test tube racks. These economical plastic test tube rack have four small 3/4" (19mm) openings and two larger 1-1/16" (26mm) openings on the top plate. The test tube rack has six hemispherical wells and six drying pins. Comes fully assembled.
8" x 2-3/4" x 3" (20cm x 7cm x 8cm)