Specification:   Material: High-strength engineering plastic Length(LXWXH): Universal、 4cmx5cmx5cm  Feature:     - Usually no guide groove、 the owner will be very difficult to install、 such as long-term use   - Can also protect leather car seats are not subject to scratch by ISOFIX interface   - Just play the slot in the seat ISOFIX interface exposed to the action、 easy to install.     Package Included:   2 pcs Car Fixed Guide Groove