This mountain bike wheel set features a 27.5 inch size, Sunringle sun MTX33 RIM, and NOVATEC D041SB/D042SB hub with sealed bearings. The wheel set supports 8/9/10/11 speed and has a QR model of Front 100X9mm/Rear135X10mm. The spokes are made of Taiwan Pillar and the weight is approximately 2.64KG/pair without the quick release lever. Please note that vacuum tire pads and vacuum nozzles need to be ordered separately.