Constitution increases by 2, and Strength increases by 1.

You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

You do not require food or water to sustain yourself. Instead, you require a specific kind of fuel that you designate upon creation. This fuel can be any commonly occuring substance, such as lamp oil, coal or soda, and you require half a gallon (if liquid) or half a pound (if solid) to gain enough nourishment to sustain you for one day

The metallic parts of your body act as natural armor for you. While you're not wearing armor, your armor class is calculated as 13 + your Strength modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC.

You can integrate a weapon, item or a set of tools into, or remove such an item from, your body with 10 minutes of uninterrupted work, which can be done as part of short or long rest. Once integrated into your body, you can draw or stow the item as part of any action that involves its use, and you cannot be disarmed of it against your will. You can have a number of integrated weapons or tools equal to 1 + your proficiency bonus, and if you try to integrate a new item while at your maximum limit, the attempt fails.