Dad Mom Nine-Link Puzzle Intelligence Lock Luban Lock Kongming Lock Competition Children's Educational Unlocking Toy Primary School Student Gift

Interlocking rings design that is challenging to separate

Five-layer nickel plating process for enhanced wear resistance, corrosion resistance, and rust prevention

Smooth and delicate hand feel achieved through multiple rounds of fine polishing and strong compression molding

Seamless one-piece molding with smooth edges and rounded corners for comfortable handling

Durable and hard material with smooth lines, crafted with precision for superior quality

Carefully selected materials and attention to detail ensure excellent product quality

Solid wood beads add to the tactile experience and overall durability