Product name: Screw fiber washersThese insulating screw washers are for use on motoards, PCBs and PCBs.Screw washers are made of fiber material.Washers outer diameter: 8mmFiber screw washers, inner diameter: 3 mmThese insulating screw washers are for use on motoards, PCBs and PCBs.Screw washers are made of fiber material.Red fiber washers for your machine builders.Washers outer diameter: 8 mmFiber screw washers, inner diameter: 3 mmWeight: 4 gColour: redpackage content:100 motoard screw washers.Only the above package content, other products are not included.Note: light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowable measurement error is +/- 1-3 cm.