This tank is not-original spare part, but an aftermarket replacement type, but the quality is as goodCompatible with for S5 S50 S51 S52 S55 S6 T6 2st Robot Vacuum Cleaner Dust Bin Replacement Spare PartsMade of high quality material, durableEasy installation: easy installation, no waste of timeIt fits your vacuum perfectly because it has the same parts, you can install it easily without extra tools.Colour:WhiteMaterial:plasticSize:163x62x91mmPackage Contents:1 * water storage boxOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.