COMPATIBILITY: This lens repair tool features 0.75mm thread pitches and an adjustable clamp for ø27-130mm lenses and filters. Note: Lenses and filters sold separately FUNCTION: Can be used to repair and restore the edge of lenses, threads or dented lenses DOUBLE-SIDED: The front side can adjusted up to 130mm while the back side can be adjusted to 27 mm for smaller lenses PORTABLE: Compact size makes it convenient to carry and easy to use PREMIUM QUALITY: Material: Black hard-anodized aluminum & Silver Stainless Steel; Professional and sophisticated manufacturing ensures high quality and accuracy