Fox 15QR Axle You are looking at a replacement 15 x 100mm QR thru-axle assembly for Fox forks. This thru-axle is compatible with non-boost Fox forks with a 15mm axle. The axle features a small handle which provides plenty of leverage to secure the axle tight. Features15 x 100mm non-boost spacing Grease threads of axle before installation Manufacturer Part Number: 820-00-610-KIT | Fox Racing Shox | 15X100Mm Qr Axle For 15 X 100Mm Qr Fox Racing Shox | Forks