pair of brake calipers suitable for: kids bmx bikes, tyres from 1.75"- 2.25", kids bikes and the old mountain bikes that are compatible material: steel weight per pair: 540grams colour: red with black pads measurement from centre of the bolt- bottom of the lowest setting of the pad: 85mm (approx) new please be advised this stock is perfectly functional/useable but in some cases it may be scratched/marked/soiled due to it being ex factory production stock and therefore in many cases unboxed.