#25 Roller Chain Sprocket, Type B, 30 Tooth 1/2" Bore 25B30H-1/2

 The 25B30H-1/2 refers to a roller chain sprocket.:

• Teeth: It has 30 teeth.
• Bore Size: The bore size is 1/2 inch.
• Material: Made from AISI 1045 Medium Carbon Steel.
• Outside Diameter (OD): The outside diameter is 2.53 inches.
• Pitch Size: The pitch size is 1/4 inch
• This sprocket is designed for use with #25 roller chain

Sprockets are essential components that work in conjunction with roller chains to power various machinery. When selecting a sprocket, it’s crucial to consider factors like the type of chain, style of sprocket (Type A, B, or C), the number of teeth needed, and the bore size. 

If you’re working on a project that requires a sprocket for a #25 roller chain, this one could be a suitable choice!