Toggle set for wide strap, bead weaving, narrow loom, or multiple strands, especially with different size beads. Run strands from one D ring to the other. Use a few jump rings to attach the bar to either one, and then loop through the other D ring. D rings are 19 x 15 mm. Holes are on 3.9 mm centres. Bar is 30 mm wide. Slot is 13 x 2.5 mm inside diameter.
This is the Tierracast Black - a sort of Metal Noir - black like iron, but shiny.
By the each.