KBJZ碳化钨矿用水井钻井高耐磨Pdc钻头

定制3-65毫米阶梯钻头，带直螺旋槽高速钢合金轴承钢，用于在金属板上钻孔 布罗卡钻石 Inclined Hole Chamfering Steel Aluminum Plate Countersunk Drill Taper Hole Bits Screw Nut Bolt Countersink Remove Internal Chip Universal Shank TCT Metal Annular Broach Cutter Core Drill Bit for Accucate Drilling Hole 钴钻头 用钻头 dormer钻头 工厂定制的金刚石芯钻头5毫米和6毫米金刚石钻头，用于建筑玻璃砌筑钻 65mm Core Drill Bit Holder Handle Diamond Core Bit for Drilling Marble Granite Brick Tile Ceramic 厂价高速钢环形刀具30毫米深孔锯金属钻孔岩心钻头 比特位 金刚石钻头 砖石钻头 博斯钻头 19件镀钛高速钢直柄麻花钻头套装电钻配件打孔钻具 Flat Drill for Woodworking High-end Product Attributes Promote Practical Use to Help Woodworking Common Uses 快速交货时间35毫米深度碳化钨尖端环形刀具，带Weldon/Fein柄 螺旋钻 岩石钻头 取芯钻头