This product is a different color from the same product as SOURCE magnetic clips. Because these are imported directly from the manufacturer of the part, they are affordable.
It can be attached to the shoulder or clothing of your jack. It uses a strong magnet so it will not fall off even when you run hard.
The magnet is used to attach and detach methods, so please avoid using this product if you are using a heart pacemaker. Please keep away from your computer or other devices that are susceptible to magnetic influences.