It's built from 1020 Hi-ten steel throughout the frame

BRAKES: U-Brake With Gyro

REAR HUB: 14mm Semi-Sealed Cassette

FRONT HUB: Loose Ball

Props Box Set supplier_54521940672838 It's built from 1020 Hi-ten5 Disc Blue ray box set from Props. Featuring: All Video Magazine Issues 1 78 (1994 2011), all 20 Year End Best Ofs & all Credits Compilations. All Special Releases including Groundwork, Euroscene, Passports, Metrojam & Owned. Over 100 bonus sections aggregated from Issues & Special Releases. All original commercials included in every Issue. Bonus videos from Props founders including "A Few Good Men" and "Baco 5". Beautiful 1080p motion menus