... .0T, argon arc welding( TIG). top tubeØ25, dowm tubeØ48,seat tube 1.2T,seat post clamp 2.0T,bottom ... thick 1.5T, hexagonal top silkHANDLEBARED, kid cycle handlebar, tube 1.0THANDLEBAR STEMED, small aluminum cover, four points, tube1. ... POSTED Ø25.4*150*0.9QUICK RELEASEalluminumCHAINCOVERblack color,plastic,inner insertCRANKED,conjoined crank,America systemPEDALS"diamond" typeMUDGUARDS"plane" type ...