Eruner 40mm Diamond Shape Crystal Glass Cabinet Knobs for Kitchen Cupboard(Blue,pack of 10) Diamond shape crystal knobs are for kitchen cabinet, drawer, bin, dresser and cupboard Made of zinc alloy and crystal, with higher hardness and tensile strength than aluminum alloy,zinc alloy knobs won't be easy to deformation Beautiful apperance,artistic and durable,easy to use and install Crystal diameter: approx 40mm,base diameter: 20mm Total height: approx 20mm,screw length: 10mm