Check the listing for details. Chisel Hammer Hand-held Pneumatic Chisel Wall Bridge Concrete Sanding Machine. Condition: New. Listed at 130.00 USD. Product parameters: Size; 20*11*4.8cm (7.87*4.33*1.9in) Weight: 6kg Number of hits (times/min): 3*2400 Displacement m³: 0.9m³/5KG Chisel head diameter/number of heads: 31*3 Chisel bundle diameter: 100mm Chiseling capacity㎡/h: 5-10 Chiseling depth mm: 3-5 The chisel is a tool similar to a "chopping axe" that processes the completed main structural surface so that the construction surfaces of the two construction phases are firmly bonded. Usually the chisel is used in the cast-in-place concrete structure. After the cast-in-situ slab is poured, the chiseling is performed and the next layer is poured to make the concrete bond firmly. Therefore, "hair chipping machine" is generally called "concrete chipping machine". The hand-held chiseling machine is small in model and light in body, especial.