Electric Scarifying Machine Concrete Floor Scabbler Bridge Surface Hammer Tool Double-layer design, disc diameter 100 mm, disc height 9 cm, net weight 1.9 kg Compatible with: Square-shank electric hammers; rotation-only operation; do not use in hammer mode Model 1 Package contents: Alloy grinding disc, 2 shafts Model 2 Package contents: Alloy grinding disc, 2 shafts + 3 alloy rollers Model 3 (Complete Set) Package Contents: Alloy grinding discs with 2 handles + 1000W clutch-equipped electric hammer Total weight of the set: approx. 6.8 kg