21-584 (27.5" x 1.75 / 650B), 32 Hole Aluminum, double wall single eyelet, SV Outer width 27.6 mm, Inner width 21.0 mm, Height 20.0 mm for disc brake Type Item Version Double Wall Brake Mount Hub Disc - 5-hole , Disc - 6-hole , Disc - Center Lock , Roller Brake , Drum Brake Brake compatibility Rim Disc Braking surface no E-bike type ready ETRTO 21-584 Rim outer width 28 mm Rim height 20 mm Rim inner width 21 mm Rim model Taurus 21 For wheel yes Main color black Double wall shape symmetrical Wheel size 27.5 " Spoke hole single eyelet Number of spoke holes 32 hole Spoke hole diameter for 2.00 mm Valve type Schrader (AV) Eyelet color silver