Purchased to support a number of bosch professional cordless tools and glad I did. The build quality is impressive and the system is adaptable, portable and supports what you need from a cordless extractor. I didn't want a mains extractor for cordless sanders, saws, etc because of cords in the way, so this, being part of the bosch system, suited my needs and does suit my needs, whether with a GEX 18V125 orbital sander, GOP18V28 with adaptor, circular / plunge saws, etc, this is more than ideal. If you buy this particular set, you have the castors, carry strap, tool adaptor which hooks up to most bosch hardware, etc, so you're set up for use straight away. This also supports the Pro CORE batteries up to the 12 AH pack where the battery door can be removed and an insert covering the hinge mount inserted, not a problem at all.