The Panther X7 Post is a fully adjustable model in the nose. The nose has multiple positions to raise and lower the frame. This is a significant advantage for the shooter looking for maximum adjustment to tune the fit of the glasses when mounting the stock. This model should also be selected if a prescription insert is to be used. The Panther X7 Post can use an insert for corrective wearers. It is recommended that the power range be between + or – 2.5. If you require additional power we recommend you use the Panther X6 Post.