ITEM NAME:Diode Capacitance ESR Meter Component Tester Transistor Clear Case Cover Acrylic Product Description Specification: Compatible with :For mega328(GM328) transistor tester Material: Acrylic Color: Transparent Dimensions: approx.83 x 83 x 30 mm With Copper Pillar and screw copper pillar version Package included: 1pc x Acrylic Case (with screws).Color: Transparent. Material: Acrylic. 1pc x Acrylic Case (with screws). With Copper Pillar and screw copper pillar version.