MaterialGround drilling bit extension rod is made of sturdy steel material, ensuring durability and long term performance. FeatureAuger drill extension rod has high hardness and is not easy to deform and has high wear resistance. Easy to UseThe drill bit extension rod is designed for easy attachment to your drill, making it a convenient addition to your tool set. ApplicationSuitable for most drilling rigs in the market and a wider range of applications.It is more convenient for install and detachable drills. UsageDrilling or coring of reinforced concrete and brick walls.Air conditioning installation, pipes, road signs drilling.Freeway and outdoor engineering drilling and core. Specification: Material: Steel Color: Black Size Chart: 20cm/7.87inch 30cm/11.81inch 50cm/19.69inch 60cm/23.62inch Package Includes: 1 PieceGround Drilling Bit Extension Rod Note: Please allow slightly errors due to manual measurement and different monitors. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store