Specifications:Item type: bike chain ring adapterMaterial: aluminum alloyColor: blackCompatibility: For Bafang BBS01, BBS02, BBSHD104BCD:Thickness: 3mmDiagonal hole spacing: 104mmSuitable: for 32T-55T four hole positive and negative toothed discMatching screws: 4 M-5*16 screwsPackage includes: 1* chain ring adapter.
