Description: Eco-friendly material and high quality Very classic and quite interesting Good for creative thinking and improve both your IQ & EQ After getting each puzzles solved by yourself, then you will get achievement, but we still attach a diagram to satisfied with some people Great gift for adults and children Material: Alloy Size Chart: Single Lock Size: Approx. 4.1 x 0.5 x 4.3cm/1.61 x 0.20 x 1.69inch Package Includes: 4 Pieces Locks (1 set)
