Lishi 2-in-1 SC4 lockpick is designed to exclusively unlock Schlage SC4 keyways. The SC4 cylinder can also be found in the Sparrows Revolver!

The SC4 from Lishi is very similar to the SC1. However, the difference between both Lishi tools lies in the number of pins in the cylinder of the Schlage lock. The SC4 is for cylinders with six pins and the SC1 is for cylinders with five pins.

This tool from Mr. Li is a 2-in-1 lockpick. This means that you can not only unlock Schlage SC1 locks without causing any damage, but also decode them. Decoding the lock allows you to precisely read how to create a custom key for the opened lock.

During lockpicking, you can read the depths of each notch. This allows you to create a new key for the SC1 lock afterwards using the decoder.