Penn Elcom - C0679 - Triangular PennBrite Corner with 4mm Radius Penn Elcom Sale! from 434 /per Qty. Add to Cart Triangular Corner. Part No. C0679 Finish PennBrite Material 1.2mm Steel Internal Radius 4.1mm Weight 51g Qty available:35 SKU:C0679 Corners - All Corners - Flat