Clear plastic template for use with any plunge router to accurately fit three sizes of letter box plates. Made from 8mm thick clear plastic. Use on wooden doors up to 50mm thick. Use with 1/2inch collet plunge router. Requires 12mm cutter & 30mm guide bush. A Unibase may be required for certain makes & models of router. Router not included. Template size=326mm x 290mm x 8mm Letterbox plate sizes 220mm x 50mm 210mm x 60mm 200mm x 60mm