Belle and the Yank 3mm x 224mm Bent Wire Shelf Supports - Hidden in Shelf Groove, 1 Pack of 4 Pieces, Approximately 1/8" x 8-13/16" Long Package Quantity: 4 Pieces (2 Pair) Approximately 1/8" x 8-13/16" Long Installs Into 3.5mm Pre-Drilled Holes Provides Invisible Mounting For Grooved Shelf Boards