Description:  Each module rotates independently for culture, centrifuge and microcentrifuge tubes. Each module clicks and locks into place.
Each Large Rota-rack module holds: 2 x 50 ml ; 8 x 15 ml; 6 x 16-20mm or 10 x 10-13mm tubes. Each Small Rota-Rack module holds 6 x 15ml; 9 x 1.5-2.0ml; 12 x 0.5-0.6ml; 32 x 200ul PCR; 4 x 8 tube strips. 
Each rack has blue, green, pink and yellow modules. Autoclavable. 

Measures: Large Rota-rack: 224 x 112 x 112mm (9 x 4.4 x 4.4"); Rota-Rack: 208 x 100 x 100mm (8 x 4 x 4")