Meco 50pcs M3 4/6/12/20mm Double Pass Hollow Hex Copper Ferrule Cylinder Piller

50pcs M3 4/6/12/20mm Double Pass Hollow Hex Copper Ferrule Cylinder Piller Description: Material:copper Size:M3*4mm,M3*6mm,M3*12mm,M3*20mm Quantity:50pcs Feature: Double pass hollow hex copper cylinder Four size can be selected Ideal for Electronics DIY or repair usage Package included: 50X M3 Double Pass Hollow Hex Copper Cylinder