Sfr raptor quad roller skates are two piece hard roller skates with improved liners and new ergonomic cuffs designed to provide your ankle with a suitable amount of support and flexibilitythe sfr raptor quad roller skates feature sfr slick wheelsthese are 62 x 36mm 76a pu cast with tpu hub they have been made using the very best quality urethane on the market and provide unrivaled feel and performancenylon hi impact chassis with aluminum trucksabec 5 chrome bearingspu cast stopperswe reco