Purchase Qty. Reference FOB Price
300-499 Pieces US$8.00
500-999 Pieces US$7.00
1,000+ Pieces US$6.00
Product Description
Hot coal mining drill bit BKF25 Item No.: BKF25(FBKF25) Material: 42CrMo+YG11C Alloy tip: made from cobalt powder of thick particles through burning in the vacuum, and suitable grade selected Body: alloy steel selected after heat treatment and high strength Weight Around 0.5KGS ...