ITEM NAME:4pcs Alloy Brain Teaser Puzzles Puzzle Box for Adults Puzzle Games Brain Puzzles 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 Specification: Material: Alloy Size Chart: Size(Shell Puzzle): approx. 4 x 4 x 1.8cm/1.57 x 1.57 x 0.71inch Size(big key): Approx. 2.8 x 0.4 x 6.3cm/1.10 x 0.16 x 2.48inch Size(small key): Approx. 2.3 x 0.3 x 5.5cm/0.91 x 0.12 x 2.17inch Size(God Lock): Approx. 4.5 x 1.8 x 6.3cm/1.77 x 0.71 x 2.48inch Size(Key): Approx. 2.0 x 0.4 x 4.8cm/0.79 x 0.16 x 1.89inch Size(Box): Approx. 4.3 x 4.3 x 1.3 cm/1.69 x 1.69 x 0.51inch Package Includes: 1 Piece Shell Puzzle 1 Piece Keys Lock 1 Piece God Lock 1 Piece Box Lock SKU: DMO0008514319413016.Size(Shell Puzzle): approx. 1 Piece Shell Puzzle. Great gift for adults and children. Material: Alloy. Size(big key): Approx. Size(small key): Approx. Size(Key): Approx. Size(Box): Approx.