Description: Replacement 3 buttons key shells with uncut blade,No electronics are included. Perfect for repairing or renewing your existing remote. reprogramming is not required. Simply install your existing electronics, cut then use. Replaces: for Benz SMART Fortwo. This is a replacement part to match the original in form and function. Simply cut the key remove the circuit board & transponder chip from your original unit and place it in the new case. Package Includes: 1x Car Remote Key case. 1x Button Pads. 1x Uncut Blade