The mechanical arm is a weapon type from Chrono Trigger and can be equipped by Robo.
| Name | Attack | Special Effects |
|---|---|---|
| Tin Arm | 20 | |
| Hammer Arm | 25 | |
| Mirage Hand | 30 | |
| Stone Arm | 40 | |
| Death Claw | 50 | |
| Magma Hand | 70 | |
| Megaton Arm | 90 | |
| Heavy Hand | 105 | |
| Kaiser Arm | 120 | |
| Gigaton Arm | 135 | |
| Teraton Arm | 150 | |
| Dragon Arm | 170 | |
| Crisis Arm | 1 | Inflicts damage based upon last digit of HP |
| Apocalypse Arm | 0 | May deal 9,999 damage |