New Old Stock 12 Tooth Seed Spacing Gear for Cole No. 40,  41,  42,  43,  44,  45,  and 46 Planters.

Referred to in Cole Equipment planter parts catalog as a "twelve point change sprocket" and was used to adjust seed spacing distance.

Cole Manufacturing part number 356.

The gear will fit a hex shaft. The hex diameter is 1  5/16 inch point to point.

The total outside diameter is 5" inch.

Current Cole part numbers may vary from the casting numbers embossed on the actual part.