【Special Design】 Staggered length design, avoid overlaping and blocking the pipeline. 【Easy Work】 Flexible structure easy for the wire to bend through the pipe, pipe I.D. should be above 30mm. 【Heavy Duty】 Braided steel construction can bare 100kg pull strength for each loop. Specification: 500 piecesSpecification: 1000 piecesFinished product size: 52 x 38cm 20.5x15 inch (500 pieces)75 x 50 cm 29.5 x 19.7 inch (1000 pieces)Product packaging: cartonProduct features: high-quality wooden materials, environmentally friendly and no peculiar smell. The cutting process of each puzzle piece is exquisite and has no burrs, and the paint surface has a uniform texture, which can be assembled and disassembled repeatedly.Tips: This product is difficult to assemble. We provide electronic high-definition color pictures as a reference for assembly. After the goods arrive, you can ask for self-printing from the customer service.notes:1 This product is a customized product with a theme that can provide highly customized services.2 For cleaning, please wipe with a cloth or wet wipes, not directly rinsed.3 Educational toys, children please use with their parents, suitable for children over 6 years old and adults. In the spare time of busy life, open a box of personalized customized puzzles with your family, relax and establish a close parent-child interaction at the same time, and cultivate children's logical thinking and practical skills. This product is also a perfect gift for family, children and lovers during the holiday.Special note: The product has a slight size error, the error is within 1-2 cm.