The speaker, a lock-picking expert, discusses the Master Lock Model 875 Combination Padlock. This lock, which is about four years old, has a completely different mechanism from the older Master Lock Model 175. The Model 875 is designed to replace the 175 and can already be found in the M175 and the 975, which is the brass version of the 875.
The speaker points out several flaws in the older 175 model. These include:
- The lock can be bypassed relatively quickly with a special tool.
- It can be decoded with the same tool by reaching in between the dial and the lock body.
- A tool is required to change the combination, which is often lost quickly.
The speaker then discusses the improvements made in the 875 model:
- It is no longer bypassable.
- The combination can be changed without a tool.
- The lock can be decoded without any tools.
The speaker concludes by stating that while the 875 model has its drawbacks, it is a mixed bag. On the positive side, it cannot be bypassed and does not require a tool to change the combination. However, it also does not require a tool to decode the lock, which means anyone with a little knowledge can quickly open it.
Here are the key facts extracted from the text:
1. The lock-picking lawyer is reviewing a Master Lock model 875 combination padlock.
2. The Master Lock model 875 is a relatively new lock, approximately four years old.
3. The mechanism in the Master Lock model 875 is different from the Master Lock model 175.
4. The Master Lock model 875 is designed to replace the Master Lock model 175.
5. The Master Lock model 875 can be found in the Master Lock model 975, which is the brass version of the 875.
6. The Master Lock model 175 has well-documented design flaws that Master Lock tried to fix in the 875.
7. The Master Lock model 875 can no longer be bypassed.
8. The Master Lock model 875 requires all true gates on the code wheels to be lined up to open the lock.
9. The Master Lock model 875 has a mechanism on the bottom of the shackle that allows users to change the combination without a tool.
10. To change the combination on the Master Lock model 875, users need to dial the correct combination, open the shackle, rotate the shackle 90 degrees, and then push the shackle down to access the change function.
11. The Master Lock model 875 has a lip on the side of the code wheel designed to catch decoding tools.
12. The Master Lock model 875 has false gates on every number, but they are narrower than the true gates.
13. The Master Lock model 875 can be decoded by feel without the use of any tools.
14. To decode the Master Lock model 875, users need to pull down on the shackle and feel how much each wheel turns.
15. The Master Lock model 875 is a mixed bag compared to the Master Lock model 175, with both positive and negative changes.
16. The Master Lock model 875 can no longer be bypassed and no longer requires a tool to change the combination.
17. However, the Master Lock model 875 can be decoded without a tool, making it easier to open quickly.