Uxcell ABS ID 4.2mm OD 7mm Length 2mm Round Spacer Black 300 Pack

Uxcell ABS Round Spacer Washer ID 4.2mm OD 7mm Length 2mm for M4 Screws Beige 300Pcs These spacers have advantages over metal spacers. All the spacers made of ABS plastic lightweight non-conductive non-rusting and corrosion-resistant. It is used to keep boards at a consistent height and prevent the joint from bending twisting and short-circuiting with a middle partition design. Fit for 3D Printer TV Wall Mounting Electrical Outlet Pegboard Robot Fpv Quadcopter Computer.