DESIGNER: Boaz Feldman MATERIAL: Brass, Stainless Steel SIZE: 2.5" x 1.6" x 0.6" (6.3cm x 4cm x 1.4cm) This item is priced at or near our cost, and will not be re-stocked. B-Lock is an original lock puzzle designed by Boaz Feldman (the son of Dan Feldman, the designer of the DanLock ). B-Lock is a two-stage puzzle. Upon the first examination, you'll notice that you can't actually insert the key into the keyhole... It's B-LOCKed! To unlock it, you'll need to think outside the box. The specific trick of this lock puzzle is like nothing you've seen before and promises to be a eureka moment for the solver. "It is truly a surprising and delightfully sneaky puzzle lock." - Boxes and Booze "I marvel at the incredible machining skills that Boaz has developed to carry out that incredible modification with such subtlety." - Kevin Sadler, PuzzleMad "It is an instant classic: a fun puzzle to solve with some sublime machining…" - Allard Walker, Puzzling Times Handling Metal Puzzles All metals tarnish over time. Residual oil and salt from handling speed up the process and may leave undesirable fingerprints. Occasional use of our Metal Puzzle Polishing Kit with a coat of Renaissance Wax will keep