- Durable design for long term use with repeated sharpening - Reduces the likelihood of scratching window film by keeping edges clean and sharp on hard cards and other squeegees - Removes invisible notches and maximizes the usable edge for window film assembly - An ideal sharpener for hard cards and other squeegees to maintain performance - Compatibility: works with standard hard cards and most squeegees used in window film work - Performance: improves edge sharpness, prolongs tool life, and supports consistent film application results - Simple, user friendly sharpening process that integrates into existing workflow - Use scenarios - Automotive window tinting: sharpen squeegees to achieve clean, scratch free cuts and even film layouts - Residential or commercial window film installation: maintain edge integrity to maximize film contact and reduce adhesive issues - Storefront glass or display film mounting: ensure precise, smooth application with durable, sharp edges