How to Use a Lishi 2-in-1 Tool: Step-by-Step Picking and Decoding Guide
Short version: a Lishi 2-in-1 tool picks and decodes in one pass. Apply light tension, lift each pin until it sets, then read the depth marks and cut to those numbers. If the tool does not match the keyway, no amount of technique will fix it.
1. Before you start
Confirm the keyway and cut count. A HU66 on a HU162T lock will not decode correctly, and forcing it damages the tool and the lock.
Clean the lock first. Grit and old lubricant change the feel of the pins and throw off your depth reading.
2. The six steps
| Step | Action | What to look for |
|---|---|---|
| 1 | Insert the tool and apply light tension | Enough to hold the cylinder, not enough to bind the pins |
| 2 | Lift each pin to the shear line | A small click and a slight rotation as each pin sets |
| 3 | Work front to back, then re-check | Later pins may drop earlier ones on worn locks |
| 4 | Read the depth marks | Each pin's depth number on the decoder scale |
| 5 | Write the sequence down | Record depths in order before removing the tool |
| 6 | Cut the key and test | Turn smoothly both ways; adjust only if it binds |
3. Tension is where most attempts fail
Too much tension and the pins bind, so you cannot feel the set. Too little and the cylinder resets between pins.
Apply tension with the tip of one finger. If your hand aches, you are pressing too hard.
4. Reading depths accurately
Read the decoder after all pins are set, not while picking. The marks line up only when the cylinder is under tension and every pin is at the shear line.
On a worn lock, the depths may not match the original key. Decode, then test the cut key and adjust the one position that binds.
5. What the tool won't do
It won't program an immobiliser, and it won't open a lock that is mechanically broken. If the cylinder does not turn with the correct key, stop and inspect the lock.
6. FAQ
How long does it take to learn?
Basic picking takes an afternoon; consistent depth reading takes practice on known locks. Start with a practice lock before working on a customer's car.
Do I need a key cutter?
To produce a working key, yes. The decoder gives you the numbers; the cutter turns them into a key.
Why do my depths come out wrong?
Usually tension or an incorrect keyway. Check the tool against the lock code first, then reduce tension.
Related reading
7. Where to start
Pick a practice lock that matches a tool you own, then move to customer vehicles. Browse practice locks or the full Lishi range.
Reviewed against current product data on 2 November 2026.
