JWIS Series By IWIS JWIS Series Roller Chains combine superb quality, extreme precision, and the best in class German Engineering to provide you with a roller chain that is extremely durable, high strength, and will have high performance. JWIS Roller Chains have an above average working life, are pre-stretched, and are supplied with a premium quality roller chain lubricant that is highly effective. The components in JWIS roller chains are manufactured only using high quality steel that has been heat-treated and case-hardened with stringent specifications for materials analysis, tolerances and surface quality. Modern production technologies ensure that each component is manufactured with consistent geometry and superior surface quality. After the chain is manufactured and assembled they are inspected for dimensional accuracy, length tolerance, flexibility, fully press fit joins on pins, outer plates, bushings, and inner plates to ensure a fully consistent quality before bing shipped out. JWIS roller chains are available in conformance to all ISO Standards, ANSI Standards, and special application configurations per request. The JWIS Series By IWIS is committed to delivering nothing less than technical perfection of the highest quality for the maximum customer benefit. With a production standard of 100% repeatability across 30 million individual parts manufactured each day Iwis's quality benchmark can be summed up in just two words: Ultimate Precision. IWIS takes great pride in their quality, certifications, and awards which confirm they know what their doing when it comes to high-quality precision industrial drive chains. To get a quote or for more information about IWIS Chains please contact us (USA Roller Chain & Sprockets) and we will be happy to assist you and get you what you need. Phone: (407) 347-3519 Email: sales@usarollerchain.com See What All We Offer "Here"!