Special for round edge machine. Use for PE edge. Install on single/double round edge machine in the rotation of 2880r/min. Special for 3mm, 4mm, and 5mm Solar PV glass, optoelectronic glass, optical glass, auto glass, and appliance glass. Sharp, quick cut, few chips, no burn on glass edge, Arc degree symmetry, no-easy-changed shape, wear resistant, good balance without shaking or vibrating. Configuration: For single/double round edge machine, 2pcs wheels or 3pcs wheels require.(Pos.1 150# + Pos.2 240#) and feeding speed reaches to 5-6 meter per minute or (Pos.1 120# + Pos.2 180# + Pos.3 240#) and feeding speed reaches to 8-9 meter per minute. Customization: Double Groove or Triple Grooves.