NAIERDI Transparent 7-Pin Practice Padlock | Locksmith Training
NAIERDI Transparent 7-Pin Practice Padlock | Locksmith Training
See Inside a Lock — The Ultimate Locksmith Training Tool
The NAIERDI Transparent Practice Padlock is the perfect hands-on training tool for aspiring locksmiths, security students, hobbyists, and professionals who want to master pin tumbler lock mechanics. Made in Mainland China, this see-through padlock features a dual-sided, 7-pin cylinder so you can watch exactly how each pin aligns when a key is inserted — making it the fastest, most intuitive way to build real-world lock-picking and key-reading skills.
Why You'll Love This Practice Padlock
- Dual-Sided 7-Pin Design: Functions as two individual 7-pin locks in one body — each side uses a different key, giving you twice the training value.
- Full Visibility: Clear acrylic body and open pin chambers let you observe every driver pin, key pin, and shear line in real time as you work the lock.
- Brass Core Cylinder: A copper/brass lock cylinder delivers smooth, realistic feedback that closely mimics the feel of a standard keyed padlock.
- Durable Construction: Acrylic + alloy + brass core construction ensures all pins stay securely in place — no loose parts, no falling pins.
- Ideal for Pick Training: Use your favorite pick set to practice single-pin picking (SPP) or raking techniques while watching each pin set in the column.
- Compact & Portable: At just 6.5 × 3.4 × 2 cm, it fits easily in a tool bag or desk drawer for practice anywhere, anytime.
Product Specifications
| Brand | NAIERDI |
| Model | PL3 |
| Lock Type | Transparent Keyed Padlock (Dual-Sided) |
| Pin Count | 7 pins per side (14 total) |
| Cylinder Material | Copper / Brass Core |
| Body Material | Acrylic + Alloy |
| Color | Transparent / Clear |
| Size | 6.5 × 3.4 × 2 cm (L × W × H) |
| Country of Origin | Made in Mainland China |
Package Includes
- 1 × NAIERDI Transparent Practice Padlock (with keys)
Who Is This For?
Whether you're a locksmith trainee building foundational skills, a security professional teaching lock mechanics, or a hobbyist curious about how pin tumbler locks operate, this transparent padlock makes learning visual, intuitive, and genuinely fun. It's also a great desk display or educational prop for security awareness demonstrations.
Important Notes
- Actual color may vary slightly depending on your monitor settings and ambient lighting.
- Please allow ±1–3 mm measurement tolerance due to manual measurement methods.
- This product is intended for educational and training purposes only. Always use locksmith skills responsibly and in compliance with local laws.
For more information on professional locksmith standards and responsible security practices, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: How many pins does this transparent practice padlock have?
A: The NAIERDI transparent practice padlock features a dual-sided 7-pin cylinder — 7 pins on each side — effectively giving you the equivalent of two 7-pin locks in a single padlock body, each operated by a different key.
Q: Is this padlock suitable for beginner locksmith training?
A: Absolutely. The clear acrylic body and open pin chambers make it ideal for beginners because you can visually follow every pin's movement as you insert a key or use a pick. It provides immediate, real-time visual feedback that greatly accelerates the learning process.
Q: Can I use standard lock pick tools with this practice padlock?
A: Yes. The brass core cylinder and standard keyway are compatible with most common lock pick tools including tension wrenches, single pin picks, and rakes, making it a versatile addition to any locksmith training kit.
Q: Will the pins fall out during use?
A: No. Despite the open chamber design, all pins are securely retained within the cylinder. The lock is engineered to provide full visibility while keeping all components stable and in smooth working order.