NEW V1.5 DESIGN! V1.5 Improvements include: Updated styling and improved surface finish Thicker walled construction for increased stiffness and durability Additional button recess to reduce accidental activation The Injection Fob is a two piece plastic case that replaces the factory case that comes with the vehicle. For 2016-2023 Tacomas, 2020-2021 Tundras, 2020-2021 4Runners with push button start only. Injection molded of high strength and impact resistant PC-ABS plastic. Existing valet key, electronics, battery, buttons, and seal are reused (not included with purchase) and packaged into the new case. Instead of an annular snap fit, this design bolts together with socket head cap screws for a more rugged and straightforward approach. Assembly requires 3/32" allen key (included). Made in USA.DO NOT USE THREADLOCKER SUCH AS LOCTITE ON THIS PRODUCT!Order 2 and save $4! Enter coupon code "Qty2" at check out. Contact AJT DESIGN for discounted prices on higher quantities.AJT Design is not in any way sponsored by or affiliated with Toyota.Instruction video: