Porter Cable 5550 Plate Joiners Biscuits Size 13mm x 30mm (1,000 Per Box). These plate joining biscuits swell when they absorb water-based glues, further strengthening a wood joint. They will fit slots cut by all standard plate joiners.
The Porter-Cable 5550 Features:
Fits slots cut by all standard plate joiners
Compressed beech wood
Swells when used with water-based glues to "lock" joints