The 1221-L is a two-shot instrument control knob manufactured from thermoplastic elastomer, designed for precision control applications in electronic instruments and synthesizers. It features a diameter of 0.45 inches and a height of 0.55 inches, with a 6mm mounting diameter and interference fit mounting type for secure attachment. The knob includes an indicator line for precise positioning and is finished in black. This soft-touch control knob is ideal for applications requiring reliable, ergonomic control interfaces in electronic equipment, offering customization options and durable thermoplastic construction for long-term performance.