... disc 1,Brasive flap disc,sanding disc. 2,Grinding welding line,hardware. 3,Advantage:wear-resisting. Abrasive flap disc(the blue ... 1)Name:K51 flap disc Zirconia Aluminum Oxide,grinding welding line,for hardware factory. 2)Advantage:wear resistanting. 3)Application fields: ... stainless steel,metal,wooden,hardware factory. 4)Grain:60#,80#,100#,120#,240#,320#, ...