The 20Five RS4 Front Wheel is a lightweight and stiff Road/Cyclocross rim built onto Hope s RS4 Straight Pull 6 bolt disc hub. They are tubeless compatible, although this does require tape and valves. The 6061 T6 aluminium construction features a strong and dependable welded join, designed to keep the rim together on hard knocks. The straight pull double butted Sapim Sprint spokes are made of stainless steel and the nipples are brass. The wheels can be adapted quickly and easily to suit different frame and fork fittings. Comes supplied with QR and 12mm end caps. All the wheels are machine built and hand finished in Barnoldswick.The RS4 Road Hub is the perfect combination of light weight and durability. Machined from forged 2014 T6 aluminium billet and with Hope s bullet proof sealed stainless steel cartridge bearings, this hub has unsurpassed reliability. Available in a wide variety of colours as well as multiple spoke hole options, allowing you to build your perfect wheelset. This is