JACK lets you carry more things on your bike. It requires no tools to fit and securely attaches to bikes with a handle bar diameter of 22.2, 25.4 and 31.8mm. Its quick and easy to attach and remove so you can swap it from bike to bike. Please have a look at the compatibility diagrams to make sure JACK fits your bike before you purchase. JACK is made from solid 304 Stainless steel and comes with two adjustable length bungees (1.2m) with snake heads to secure your baggage, a bunch of spacers and inserts and 5 different length Loadstraps to fit JACK to your bike. The Black JACK is black powder coat finished. JACK is rated to carry 5kg max based on the negative affects of bike handling when loaded. Please note: \\1. If you purchase more than one JACK they will be shipped separately. \\2. If you purchase additional straps with your JACK they will be bundled with your JACK or one of your JACKs if you purchased more than one JACK.