The AllPoints Foodservice Parts & Supplies 224457 is a high-quality Bj Knob designed for optimal functionality in foodservice equipment. With a diameter of 1-15/16 inches, this black knob features a notch-up design for easy grip and operation. The protrusion extends 1-1/4 inches from the back of the knob, ensuring a comfortable reach. Compatible with Jade JGT and JSR models, this knob is an essential accessory for maintaining the efficiency of your kitchen equipment.