Amazon offers Tacklife Retractable Utility Knife, Safety Box Cutter with 5 pcs SK5 Blades, Automatic Retraction Patent Design, Quick Change Blades, Zinc Alloy+TPR Body -SKH01 for $14.97 +Free Shipping

Apply Code: EV7NZRYA 

Product Description:
TACKLIFE utility knife has a patented design of automatic retraction. Even if the actuator is still at extending position, the blade retracts automatically when it loses contact with workpiece being cut. It's safer to use. Very suitable for families with children.