Electric strong batch Tsui magnetic coil

Specification:

Material: Aluminum Alloy
Color: As Pictures Shown
Length: 21mm
Quantity: 1 Pc

Note:

1.No retail package.
2.Please allow 0-1cm error due to manual measurement. plz make sure you do not mind before you bid.
3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes:
1 x Magnetic Ring

Instructions:
1. The magnetic steel sleeve is inserted into the 6.35mm bit for connection
2. Make sure the magnetic steel sleeve is fixed on the bit
3. Put the screw on the bit with the magnetic steel sleeve inserted
4. Strong magnetism prevents the screws from falling off