3M 7440B土黄色尼龙擦片 切削/抛光 A MED 粒度:150#,矿砂:氧化铝 金刚砂含量高,能快速移除氧化层,擅长用于不锈钢清洁和除锈。 尺寸:6IN*9IN 包装:10片/盒,4盒/件 Scotch-Brite™ Heavy Duty Hand Pad 7440, 6 in x 9 in Tight and dense, this pad is the most aggressive and durable web. Excellent for heavy cleaning, deburring, and finishing. May be used by hand, with a hand pad block or on an in-line sander. Abrasive mineral: Medium grade aluminum oxide. Color: Tan