Herkules' Paint Gun Washer Maintenance Kit comes equipped with the most common components needed for tuning-up Herkules Paint Gun Washers that have been in the market up to 30 years. It also includes parts that can modify a Herkules Paint Gun Washer from a two-gun/two-cup washer to a four-gun washer, now that many shops are using disposable cup systems. A total of 36 parts come included in the kit.