Instruct: Classify a given review as either positive or negative.
Query: conncetion to Bosch surface grinder

I may not know how to use this connector but the size on both ends of this connector do not fit into any equipment. The small end do not fit into the connector comes with the Bosch grinder and the large end not not fit into my vaccume hose. I have to use tape to put them together and many time the tape came off and dust flies, I think Bosch should a better connector with locking mechanism so the connector and hose will not separate.