The autostart function automatically starts the vacuum cleaner when a connected machine is switched on. That saves time and money! The roundy is a practical hand block with suction for Ø 150 mm slices and particularly well suited for the painter and drywall area. The Roundy Handbolock with suction hose and strained slices in three different grains. In combination with a Mirka industrial dust vacuum cleaner and the strand, optimal suction is guaranteed. The roundy is a practical hand block with suction for Ø 150 mm slices and particularly well suited for the painter and drywall area. The abranet grinding network in combination with the Roundy has a much higher service life compared to traditional paper grinding agents. The flat design and the deepening for the fingers offer the user an ergo.