These strips are the perfect roadbed for especially tight track applications. The strips are 5mm x 24''. Track-Bed requires no pre-soaking like cork does: it remains flexible and won't dry out or become brittle! It aligns well with cork or Homasote applications. Install Track-Bed with Foam Tack Glue (ST1444). Pin in place with Foam Nails (ST1432). Sold individually.