Danaher Tool Group Jacobs Rubber Key Holder is a convenient and practical solution for keeping your chuck keys and drill cords organized and easily accessible. Made of durable black rubber, this key holder is designed to fit most brands of 1/4 inch and 3/8 inch chuck keys. It securely attaches your chuck key directly to your drill cord, ensuring that it is always within reach when you need it. With its universal design, this key holder is a must-have accessory for any professional or DIY enthusiast who uses chuck keys and drill cords.