The Bosch GSS 18V Orbital Sander accepts both hook & loop and clamped paper. It has a compact, one-handed design with soft grip surfaces for different grip positions. Dust sealed bearings provide increased lifetime. The microfilter system provides efficient dust extraction. Comes as a Bare Unit, NO battery or charger in a cardboard box. Compatible with all Bosch Professional 18V batteries and chargers (Professional 18V System) Also compatible with AMPShare, the multi-brand battery alliance. Specifications: No Load Speed: 11, 000-22, 000/min. Orbit Diameter: 1.6mm. Sanding Plate (Width x Length) : 113 x 101mm. Sanding Surface: 114cm². Weight: 1.7kg (with battery) .