... the mold by ourselves,own the die-casting,punching.,etc,machinesMaterial:Solid brass ,zinc alloy,stainless steel 304,aluminium ... be produceApplication:Suitable for residences,commercial buildings,office building,hotels..etc.Finishes:A) Brush Nickle(BSN.BN)B) Chrome ... Polish(CP)C) Satin Chrome( SC)D) Satin Nickle(SN)E) Other finishes: PVD, Gold ... per Item LC-AP21 F4 Alum Door Handle set