Burr Pieces - In-Stock - 6 mm series

A traditional 6-piece burr puzzle, beloved for over a century! With over 800 different shapes for each of the six pieces, the plain-seeming exterior of these burrs belies the mysteries within.  While one may pickup and disassemble a simple burr in seconds, the toughest burrs flummox even hard-core puzzle lovers.  This broad range of challenges has kept burr puzzles in the forefront of puzzle collections for decades. About the Pieces: We have designed our burr pieces to interoperate not just with the other pieces in the puzzle you purchase, but with ANY piece we produce in the same series!  This means you can start your collection with a single burr puzzle, and add individual pieces or entire sets later, assured they will all fit together. The pieces in this listing are all "6 mm series" pieces, which means each little 'cubie' is nominally 6 mm center-to-center.  These are length-6 pieces, so their approximate total size is 0.5" (12 mm) wide and 1.5" (36 mm) long. We Also Make Custom Pi