Racks are for 96 Deep-Well Microtiter Boxes. Drawer Racks allow an easy access to fewer microtube boxes at a time thus protecting other samples in the rack from warming up. Constructed of corrosion resistant stainsteel. For Matrix: 500ul Screw Top Latch Rack (H=1 3/4"/44.32mm)  0.75ml Latch Rack(H=1 1/2"/39.37mm)  For Micronic:  Roborack 96 format with low cover(H= 1 5/8"/41.2mm)  For Fluidx:  384 format for Square Tube(H=9/16"/14.4mm.each compartment holds 3 racks)   Low Profile 96 format for 0.5ml and 0.75ml with Tall Profile Lid(H= 1 3/4"/43.87mm)   96 Format for 1.0ml with Low Profile Lid(H=1 3/4"/43.9mm)   96 Format for tube with Protective Jacket ad Standard Lid(H= 1 3/4"/44.9mm)