The Spare Eyelets 4mm x 400pc for TC4300 are replacement eyelets designed for use with the TC4300 eyelet machine. These 4mm eyelets are commonly used in applications like fabricating, leatherworking, and other projects that require durable eyelets for reinforcement or decoration. With a pack of 400 pieces, this bulk supply ensures you have plenty of eyelets on hand for large projects or high-volume use. These eyelets are designed to fit and function seamlessly with the TC4300 machine, ensuring efficient and reliable results during production.