Magnet Shape: Ring with Cylindrical Borehole (Hole)
Material: Sintered Hard Ferrite (Ceramic) and Steel
Coating: Nickel (Ni)       
Grade(Chinese Stardard):         Y30BH
Magnet ID:              FPCB-85-Y30BH-Ni 
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 3.8-3.9 KGs (mT):  380-390 mT
Intrinsic Coercivity Force (Hcj):    2.80-2.95 KOe    223-235 KA/m
Coercivity Force (Hcb):              2.90-3.08 KOe    231-245 KA/m
Energy Density (BH)max:              3.4-3.7 MGOe     27.0-30.0 KJ/m³
Operating Temperature:               -40 °C to +250 °C
Magnetisation Direction: Axial / Radially magnetized
Pot Magnet Size:
Pot Diameter (D):  85 mm
Pot Height (H):    15 mm
Borehole  (d1):    11 mm
Borehole  (d2):    16 mm
Depth      (t):    9 mm
Tolerance:         +/-2% mm
Delivery time           7-25 days
Measurements

Pot magnet has a particular magnetic circuit that can concentrate or insulate magnetic power at a target space around the magnetic assembly.
1. Materials: Permanent magnets(ferrite, alnico, NdFeB) and metal or steel.
2. Application: Pot magnets hold things you need to keep within easy reach. Such as in jobber vans, workshops, auto repair and service stations, or even in the warehouse.
3. Available in different forms and shapes, which are finished in white, black, gray, Nickel or Zinc coating, or rubber covered permanent pot magnet
Product Name:
Pot Magnet, Shallow Pot Holding Magnet,Force Magnet,Round Base Magnet,Mounting Magnet, Countersunk Magnet & etc.
Features:
The Pot Magnet with Countersunk have a countersunk hole in the front (magnetic) face and can be easily fixed in place with a countersunk screw (M4, M5 and D8). They are ideal for using in fixing applications such as Point of Sale Displays, Exhibitions, Marketing Displays, Doors, Panels, False Ceilings and Light Fixtures and Fittings.