(CBS-015-E-BLACK) 15 Series 4 Hole Slotted Inside Corner Bracket

15 Series 4 Hole Slotted Inside Corner Bracket, TNUTZ Part #CBS-015-E-BLACK. They are 100% Equivalent to the following manufacturers: 80/20 #4290-BLACK These brackets will fit in the 15 Series (1.5″) extrusions.  The dimensions are 2.31″ x 1.5″ x 1.5″, and have a wall thickness of .250″ (1/4″).  The holes are Ø0.328, and the slots are 1/2″ long, and each bracket is individually wrapped in paper to prevent rubbing during transport. Made of 6105-T5 Aluminum and have a black anodize finish. They will fit 15 Series or 8mm T-Slotted Extrusions, and may also fit 40 Series extrusions depending on how they are mounted. These parts are BRAND NEW, and are deeply discounted from the list price.