<b>We suggest all our customers to buy the extra tips/connectors here.<br></b><br> CAFELE Office make sure these tips are 100% compatible with CAFELE round magnetic cable whose diameter is 90mm±1mm.<br> Insert Energy: 35N max; Pull out Energy 10N Min; Life-time 8000+<br><br> Magnet test: 5+ seconds: Keep Hanging 600 Grams weight<br><br> Shaking test: 3000+times - Hanging 200 grams and 180° shaking<br><br> Temperature test：Works well between 140℉/ - 05℉.<br><br>