Description:

• Increasing the magnetic field strength, the effective increase sensing distance
• Size: Approx. 72 x 118mm / 2.83 x 4.64 inch (you can Cut by yourself)
• Thickness: Approx. 0.1mm

I am sure it the right thing you need now.
Don't hesitate, bid now and never miss it. You will receive a parcel contains as below.

• 1 x Ferrite sheet