Hook Ring Only OKRT133R Koban 103109 is a precision-engineered sewing machine part designed to ensure smooth hook rotation and reliable stitch formation in industrial sewing operations. It delivers stable performance and helps maintain consistent sewing quality.
Key Features:

Compatible with Mitsubishi DY-253-00 and Singer 133K sewing machines

High-precision Koban hook ring (OKRT133R model)

Ensures smooth and accurate thread loop formation

Durable construction for long-lasting industrial use

Ideal replacement for worn or damaged hook rings

Helps maintain consistent stitch quality and machine efficiency

A dependable replacement part for keeping your sewing machine running smoothly with professional results.

Orders are typically processed within 1–3 business days.

We ship from our Georgia, USA warehouse. If an item is temporarily unavailable in the U.S., we source it through our global supplier network and will notify you of the estimated lead time.

Free shipping is available on U.S. orders over $99.

Once your order ships, you will receive a tracking number by email.

For urgent orders or shipping questions, please contact us before placing your order.

We stand behind the quality of the products we sell.

• Genuine OEM parts are covered by the manufacturer's warranty where applicable.

• Aftermarket and generic parts are covered against manufacturing defects.

• If you receive a damaged, defective, or incorrect item, please contact us within 30 days of delivery.

• Warranty does not cover damage caused by improper installation, misuse, normal wear, or modifications.

If you have any questions, our support team is happy to help before or after your purchase.