Globe® Scientific 456500 Series Test Tube Rack, 16 17mm, 60 Place, White, 1 Each Floor Powders and Solutions * Hook and loop fastener 00298E * Hook and loop fastener secures extension to mattress to reduce shifting Easy push button release mechanisms * Each side operates independently to allow easy movement through narrow spaces and greater stability while standing * Sturdy 1 diameter construction ensures maximum strength * Newly designed rear glide cap allows for walker to slide easily and smoothly over most surfaces * Vinyl contoured hand grip * Comes with wheels * Limited Lifetime Warranty * Width inside hand grips: 17 * Width inside back legs: 20 * Overall Width: 24 * Depth at base (opened): 17´ * Height: Adjustable from 32 39 * Weight limit: 350 lbs * wet or in water baths because they will not float Test tube rack for 16 mm and 17 mm tubes