These design handles material are Aluminum alloy, we can make it into any size in any colour ( we can make in anodized or powder coating and painted or chrome) base on the customer demand, design and sample. And they are assemble with wooden wardrobe or cupboard or kitchen door outside with screws to fix outside. They are quite much more popular design and match in whole house customization. They are easier to be assemble and fix with screws just measure the two screws size. The user can make it by themselves.