Selling my copy of BMSD by Two Brass Monkeys. I have to solve and sell due to financial reasons. Here is the description from the designers site. "We made it! Brass Monkey Sixential Discovery is the last in the eponymous Brass Monkey Series. It looks like a six piece burr, but like BM2, BM3, BM4, BM5 there is a trick beneath the surface. In the case of BMSD, there are quite a few! weighs around 730g (1.6 lbs). Each piece is 70mm long and has a diameter of 19mm. This is a puzzler's puzzle. Perfect for fooling those who think they have seen it before. It looks like a standard interlocking Burr. It isn't. It makes a perfect sextet with its five predecessors and completes the set.BMSD ships with everything needed to solve the puzzle. No external tools are necessary." Kept in a pet free environment. Shipping will be calculated after the auction ends. Please wait for final invoice before paying. payments accepted are PayPal friends and family only and venmo.