Specification:
Product name: Multi-functional electric grinding copper drill chuck + small wrench set.
Material: Aluminum Ally + Brass.
Clamping range: 0.3-3.4mm.
Specifications (tail aperture): 2.0mm/2.35mm/3.0mm/3.17mm/5.0mm.
Common DC motor selection specifications:
180 motor -- 2.0mm shaft diameter.
385 motor--2.35mm shaft diameter.
555 motor--3.17mm shaft diameter.
775 motor--5.0mm shaft diameter.
Packing:1PC
NOTE:
For a motor whose model is unknown, or a motor whose shaft diameter is known but whose shaft diameter cannot be found, it is necessary to use a caliper accurate to 0.1mm to measure the precise motor shaft diameter, and then select the specification of the corresponding shaft diameter.