This weight kit is required to get the best performance of Toro attachments such as the Cargo Carrier (79030) or the Brinly-Hardy rear mounted spreader or sprayer. The weight balances the machine installed with an attachment. The kit contains one 35 lb. weight and the hardware needed to install it. Can be easily removed when the attachment is not in use. The weight kit is included with the TimeCutter baggers (see baggers for details)