This genuine Welger 1103420807 chain wheel is an essential component for various Welger agricultural balers. It features 10 teeth, a 12.7mm (1/2 inch) chain pitch, and is designed for a 1/2" x 5/16" chain type. The wheel has a bore diameter of 20mm, a hub diameter of 40mm, an overall diameter of 48mm, and a width of 20mm. Weighing 0.12 kg, this durable chain wheel ensures reliable power transmission and is compatible with numerous Welger AP and RP series baler models.