DIY Frequently Asked Questions / Retractable-Blade Utility Knife')">
General-use tool designed to cut materials such as drywall, cardboard cartons, laminates and plastic.
Blade retracts into body of knife for safer operation and storage.
Some models have up to 3 different blade positions for different cutting depths.
Higher-end models have rubber grips and ergonomic designs for better gripping.
Handle generally unscrews or swivels open to permit blade changes.
Many models have extra blade storage in handle.
Some models have spring-loaded blades that automatically retract when the knife is released.