Specifications: 1) 8-piece set 2) Thread: BC 1" x 24tpi or M26 x 1 3) Diameter: 22.2, 30, 27 4) Bearings: caged (5/32" x 16) 5) Material: steel 6) Finish: CP, black 7) Weight: 133g Inner packing: 1 set/polybag Outer packing: 200 sets/ctn Carton dimensions: 41 x 24.5 x 23cm N.W.: 27kg G.W.: 28kg