Gravel frame
Material : Reynolds 931
TIG + Fillet Brazed Handmade
B / B : T47 (M47*P1.0), making pedaling more stable.
Seatpost : 27.2
Rear brake : Flat mount 160 &180
M12*P1.5 THROUGH AXLE dropout
Tire : 700C*45C
Full internal cable routing
Weight : 2.47KGS

Material: CR-MO steel
TONJIN design similar functions use for UDH System dropout +Unlike existing market designs lighter dropout.
Reserve space for fixed shelving (Reserve space for tapping threads or the outer shape can be removed).

Material: CR-MO steel
TONJIN design similar functions use for UDH System dropout +Unlike existing market designs lighter dropout.