5-Pack Nano Plastic-Steel Door Shim Cards | Locksmith Tool
5-Pack Nano Plastic-Steel Door Shim Cards | Locksmith Tool
5-Pack Nano Plastic-Steel Door Opening Shim Cards
Whether you're a professional locksmith or a hands-on DIY enthusiast, these Nano Plastic-Steel Insert Shim Cards are an essential addition to your toolkit. Engineered from high-density nano composite material, each card combines the hardness of metal with the flexibility of plastic — so you get a tool that's both incredibly durable and surprisingly pliable. Made in Mainland China.
Key Features
- High-Density Nano Material — Combines metal-level hardness with the toughness and bend-resistance of quality plastic for long-lasting performance.
- Flexible Yet Rigid — Can be repeatedly folded and curved without cracking, splitting, or losing its shape — unlike conventional plastic or metal shims.
- Optimized Dimensions — Each card measures 80mm × 230mm, sized for easy insertion into standard door frames and gaps.
- Smooth Edges — Designed to slide cleanly into tight spaces without scratching or damaging door frames or latch hardware.
- Value Pack of 5 — Get five identical cards so you always have a spare on hand for professional jobs or household use.
- Versatile DIY Use — Ideal for locksmiths, property managers, and DIYers who need a reliable shimming or door-opening tool.
Specifications
| Material | Nano Plastic-Steel Composite |
| Dimensions (each card) | 80mm × 230mm |
| Quantity | 5 Pieces |
| Country of Origin | Made in Mainland China |
What's in the Box?
5 × Nano Plastic-Steel Door Shim Cards (80mm × 230mm each)
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Frequently Asked Questions
Q: What is a nano plastic-steel shim card used for?
A: A nano plastic-steel shim card is a thin, flexible tool used by locksmiths and DIYers to slide between a door and its frame to manipulate spring latches. The high-density nano composite material makes it tough enough to apply firm pressure while remaining flexible enough to curve around door stops and frames without breaking.
Q: Will these shim cards damage my door frame or latch?
A: These cards are designed with smooth edges and a semi-flexible construction that minimizes the risk of scratching or marring door frames and latch hardware. When used correctly, they provide a smooth, controlled shimming action that protects surfaces.
Q: How do nano plastic-steel cards compare to ordinary plastic cards?
A: Unlike standard credit-card-style plastic, the nano composite material used in these shim cards offers significantly greater rigidity and hardness, allowing them to withstand repeated bending and heavy use without cracking or permanently deforming — making them a far more durable long-term tool.