API 3 Wings Alloy Steel Drag Bit/Stepped Drag Bit/Tungsten Carbide Drag Bit Professional with varies kinds of tungsten carbide (TC) drag bits in China for many years. Including of carbide drag bits, carbide step drag bits, 3-wings, 4-wings drag bits. 1-API or ISO 9001:2008 2-Delivery term: By air or by sea 3-MOQ: 10 units 4-Size: 3”-17” 5-Packing: Wooden Case Product Description: Step Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades. They are usually designed for use in soft formations such as sand, clay, or some soft rock. Their uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Whenever possible, they should be used to drill pilot holes, for they produce cuttings are easiest to log. Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples. Many special designs are available upon your request. Three wings step drag bits: 1、Drag bits are made according to API standard or no thread standard just welding 2、Various step and chevron drag bits are available from 3 inch to 17 1/2 inch. (normal small size are 3”,3 3/4”,3 7/8”,4 3/4”,4 5/8”,5 7/8” and so on) 3、There is very good feedback from our customers because of the quality and price. 4、Different drag bits can be made according to your drawings or samples.