10 Series 2 Hole Inside Corner Bracket, Part #CB-010-B-BLACK. This ad is for one piece. These brackets will fit in the 10 or 25 Series (1″) extrusions. The dimensions are 0.875″ x 1″ x 1″, and have a wall thickness of .188″ (3/16″). The holes are Ø0.281″, and each bracket is individually wrapped in thin paper to prevent rubbing during shipping. Made of 6105-T5 Aluminum and have a BLACK anodize finish. They will fit 10 Series or 6mm T-Slotted Extrusions. These parts are BRAND NEW, and are deeply discounted from the list price. These parts are fully compatible with the following manufacturers of T-Slotted Aluminum Extrusions: – T-Slots (Futura Industries) – P/N – Frameworld – P/N 11-1 – These T-Nuts will also fit in AcuFrame, ITEM, 80/20, MAYTEC & PARKER IPS extrusions.