Materials: Abrasives:aluminium oxide Bond:resin over resin Cloth:J-weight twill blending cloth Application: Polishing wood,handcraft ware,vineware,And also for metal polishing. Suitable for narrow sand belt.It is used for hand and machine. 粒度Grits：40-60-80-100-120-150-180-220-240-280-320-400-600 卷状最大宽度Max Width for roll：1400mm 卷状最小宽度Min Width for roll：25mm