Biscuits are small wood discs that fit into pockets cut by a biscuit joiner and align two workpieces along an edge. They glue into place and bring together the pockets in each workpiece. The glue swells the biscuits for a snug fit. Choosing a biscuit size that most closely matches the pocket creates the tightest joint.

These blades replace worn or missing blades on compatible biscuit joiners. Fresh blades cut more quickly and evenly than dull blades.