All around double wall, welded joint BMX rim 4D drilling process creates the optimal interface between spoke and rim - eliminating the need for eyelets I-Beam construction counteracts spoke loads and provides torsional rigidity Designed and drilled for 3 cross specifically - do not lace radially Each TCS Malice rim comes drilled for tubeless valve and Schrader, with a valve plug for the unused valve hole Sealant required for tubeless use 20in Alienation Malice TCS 406 23 28.5 16.6 Dbl MSW Black Matte 36 SV 325g 394