1. This practice lock set is suitable for beginners and professionals who want to improve lock picking skills and who always lose his keys. It's also a wonderful gift for kids who are interested in structure and science.Features:Package includes 3 practice locks to meet your different needs.Visible design, allows you to see how the practice locks work.Training lock helps you practice lock picking and improve skills.Made of high quality stainless steel, sturdy and durable to use.Suitable for beginners and professionals, wonderful gifts for kids.Each lock is equipped with 2 keys, helps you learn the mechanism behind the lock.Specifications:Material: Stainless Steel + AcrylicItem Size:8 * 5 * 1.5cm / 3.1 * 2.0 * 0.6in2.8 * 2.4cm / 1.1 * 0.9in (Dia. * H), 4.5cm / 1.8in6.5 * 3.3 * 2 * 1.3cm / 2.6 * 1.3 * 0.8 * 0.5inPackage Size: 20 * 16 * 6cm / 7.9 * 6.3 * 2.4inPackage Weight: 274g / 9.7ozPackage List:3 * Practice Lock6 * Key2. This set is suitable for beginners and professionals who want to improve lock picking skills and who always lose his keys. It's a wonderful gift for kids who are interested in structure and science. Comes with different picks, meet your different needs.Features:Package includes 17 different picks, meet different needs.This set can help you practice lock picking and improve skills.Made of high quality stainless steel, sturdy and durable to use.Suitable for beginners and professionals, wonderful gifts for kids.Comes with a black storage bag, convenient to carry, keep the picks organized.Specifications:Material: Stainless SteelItem Size: Approx. 13.5 * 1cm / 5.3 * 0.4inPackage Size: 17.5 * 10 * 2cm / 6.9 * 3.9 * 0.8inPackage Weight: 146g / 5.2ozPackage List:17 * Pick1 * Storage Bag