Front Idler 7022139 for Bobcat E25 E26 Idler This is the large idler wheel on the opposite end of the undercarriage from the sprocket. Idlers provide a way to control track slack and tension. Product Specifications Color Black Material 45Mn Steel Product Price Best price (Consult customer service for detailed quotes) Product Type For Construction Machinery Application Excavator Condition 100% New Specification Customizable (please contact customer service to provide size)