Easy Installation--Both male and female thread are 5/8"-11, fit for all 5/8"-11 thread angle grinders and polishers.
Material--The grinder extension shaft is made of 45# steel with Electrophoretic Coating workmanship to ensure its practicality and durability.
Seamless Docking--Stable installation with Precise thread,make sure the polisher or grinder working smooth without loosening.
Combination and Matching--The angle grinder extension shaft set including 3inch, 3.9inch, 5.5inch, which can be connected together freely to a special length as request
Used Widely--The rotary extension rod can help you reach the narrow, tight or awkward place which normal grinder or polisher can not touch, It needs to be matched with various grinding heads, grinding wheels, grinding discs and so on.
