United Scientific Reversible racks can be used for 0.5ml or 1.5ml capacity tubes. Both sides of the rack can hold up to 108 tubes, and feature alpha-numeric grid for inventory management. Included transparent lid can be used to cover either side to provide a clear view while protecting stored tubes. Autoclavable. Dimensions 8 x 5 x 2 (210 x 133 x 52mm). Assorted colors. Pack of 5 Shipping Details Shipping Type: parcel Free Shipping: true Specifications Maximum Age: 18 Years Maximum Grade Level: Grade 12 Product Dimensions: 210 x 133 x 52mm Allergens: Contains No Allergens Certifications: Not Applicable Grade Level: Middle-High School Specialty Shops: Clearance SUOM Description: Pack of 5 Brand Name: United Scientific Description: Microcentrifuge Racks Material: Polypropylene Color: Assorted Material Type: Polypropylene