00-719255-00012 Knob - Red, W/Set Screw Compatible With Hobart Equipment. 90 Day Manufacturers Warranty. High Quality Replacement Part. Please message us on Amazon for part fitment and lookups. We will require a brand, model number and a serial number off of your equipment for compatibility inquiries. 00-719255-00012 Knob - Red, W/Set Screw Compatible With Hobart Equipment. 90 Day Manufacturers Warranty. High Quality Replacement Part. Please message us on Amazon for part fitment and lookups. We will require a brand, model number and a serial number off of your equipment for compatibility inquiries.