Motion Pro is dedicated to producing the most versatile, unique and durable products for professional and home use. Motion Pro tools are designed to be simple to use, yet durable enough to withstand the harshest conditions. One of their goals is to offer tools of convenience. Do it right the first time with Motion Pro Tools. Available in two sizes: Type-A kit is designed to work on radiator necks ranging from 15.75 mm to 20 mm - Specified range is most commonly found on Japanese manufactured radiators, 2016 and up KTM, and can also be found on some late model water-cooled American V-Twins. Type-B kit is designed to work on radiator necks ranging from 20 mm to 24.5 mm - Specified range is most common on some European manufactured radiators including 2015 and earlier KTM. Designed by Motion Pro. Notes: Adapter ONLY. Measure your radiator neck to confirm correct size for your application.