Wholesale 4 1/2 Inches PDC Drag Bit 3 Blades For Hard Rock Drilling Water Well in the stock from China supplier. The drill bit is designed with 3 straight blades and short parabolic configuration,made with low carbon alloy steel,improving ROP and enhancing the sability of the bit.With auxillary cutting teeth, this bit has higher sttach strength and abrasive resistance in high grind formation.Suitable for drilling in medium formation with high penertation rate. PDC drag bit: A drag bit is a comprehensive drilling bit, mainly used for water wells, mining, geothermal, environmental and exploration drilling. It is suitable for drilling in soft and soft-medium formations with fast penetration rate and high efficiency, and special for the large diameter holes' drilling.
PDC drill bit is super hard material combined with diamond and hard alloy under high temperature.It has the advantages of hard and durable from diamond,and has the advantages of high impact resistance and big blade from hard alloy. It greatly imporoves the drilling efficiency and is the ideal drill bit for the drill operation of medium & hard as well as super hard rock. 
Drag bits also named blade bits with TC inserts on the blade. They are usually designed for use in soft formations such as sand,clay or soft rock. Their uses include drilling water wells,mining,geothermal,enviromental and exploration drilling. 
Strengthen the protection,increase resistance to wear,increase the service life. 
| Drag Bit Size(Inch) | 4 1/2 Inches |
| Drag Bit Connection | 2 3/8" API reg pin |
| Blades Quantity | 3 |
| Drag Bit Formation | Soft ,medium soft ,hard,medium hard,very hard formation. |
| Type | Dimension | Thread Connection | |
| inch | mm | ||
| 3 blades Step Type | 3 1/2~17 1/2 | 89~445 | N Rod,2 3/8 ~ 6 5/8 API REG / IF |
| 3 blades Chevron Type | 3 1/2~8 | 89~203 | N Rod,2 3/8 ~ 4 1/2 API REG / IF |
