Knobs may have storage marks This KB Solid State Motor Speed Control, model KBWC-16K, is a high-quality product perfect for regulating motor speed. It is designed with the latest technology to ensure maximum efficiency and precision. It is compatible with a wide range of industrial applications, making it a versatile option for any industry. This motor speed control is manufactured by KB, a reputable brand with years of experience in producing reliable and durable products. Its MPN is KBWC16K, and it falls under the category of Industrial Automation & Motion Controls, specifically PLC Processors. This product is a must-have for anyone looking to improve their motor speed regulation. If listing has a quantity, all the boxes or items may not be in the exact shown condition. If this would be a problem for you please ask any questions prior to purchasing. Thank you. .We specialize in material, products, and tools used in the trade industry. Please contact the office for any questions. If you need expedited shipping, please let us know, and we will do our best to get it out ASAP. The expedited fee varies by item. We also combine shipping when possible. We try to ship out our items within 1-3 business days. If there is ever ANY issue with an item you receive, please let us know, and we will do our best to resolve the issue. We do 30-day free returns. We would like all of our customers to know that whatever you see in the pictures is what comes with the item, and please review the pictures carefully before purchasing. Thank you for your business!