Arnold Magnetics part no. 58551-A2 powdered iron toroid core with grey enamel coating.

• Device Type: Toroidal form core
• Material: Iron Powder / Ferrite 
• Dimensions: 1.3" OD x .420" Height (see below for additional details)
• Color: Grey enamel / epoxy coating
• Manufacturer: Arnold Magnetics
• Part Number: 58551-A2
• Specification: N/A
• Source: Inventory surplus - some shelf wear and/or discoloration may be present.

Dimensions:
OD: 1.3 in.
ID: 0.785 in.
Height: 0.420 in.