Anbull 3 Piece Earth Drill Extension Rod 8 -12 -20 Extension Rod Set Apply to Attach Earth Auger Drill Bit

?Features?: 1. Bolt design, convenient and quick disassembly and assembly. 2. The extension rod is light and strong, and does not increase the load under the premise of ensuring the strength 3. Contains 3 different specifications to meet the requirements of different depths ?Specifications?: ? Used for matching drill bits, used to lengthen the drill bit and dig deeper holes. ? Length: 8''/12''/20'' ? Inner diameter: 20mm ? Material: Steel pipe ?Package Includes?: ? 1 x 8'' extension rod ? 1 x 12'' extension rod ? 1 x 20'' extension rod ?Notes?: ? The above data is manual measurement, there are some errors of 0.01-0.05mm, everything is subject to the actual product.