Notaco spoke kits are specifically designed to be used with OEM hubs and Notako rims. Value priced as a great alternative to the higher line of Excel spokes. Durable and strong 9 gauge front and 8 gauge rear. 8.5 millimeter steel nipples. Fits: Kawasaki front hub 21 x 1.60 rim: KX125 89-05; KX250 89-05; KX250F 04-05; KX500 89-04, Suzuki front hub 21 x 1.60 rim: RM-Z250 04-06.