and three marking options are also included

qty 2 M3x14mm BHCS (Black)

CNC Hardened S2 steel construction Axle- CNC Cut # 45 Hardened Steel gear

Smooth- Three ball bearings to make it more powerful and smoother

Robotime - ROKR Magic Piano Mechanical Music Box 3D Wooden Puzzle HPI160177 and three marking options areROKR Magic Piano 3D wooden puzzle AMK81 is the latest product in the Mechanical Music Box series, designed on the basis of a hall of fame concert grand piano, with a self playing interpretation and elegant self playing keys, adding a touch of mystery to the classical flavor. The product features a vintage look and decoration, with the main body consisting of a classic grand piano and magical antique books. The magic books stacked under the body of the