【What You Will Get】You will receive 24 utility knives, 2 colors. The utility knife size is 5.1x0.78 inches, and has a 9mm wide blade, which is compact and easy to carry. 【Wide Range of Use】This multifunctional box opener will become an indispensable tool in your life, whether open bubble mailer, sharpening pencils, DIY crafts or cutting cardboard, it can perfectly meet your needs and make your life more convenient. 【Sharp Blades】The utility knife blades are made of high carbon steel, and the blade is sharp and silky, helping you to complete the cut effortlessly. Please pay attention to safety When using. 【Locking Design】The free locking device of box cutter retractable can freely adjust the length of the blade according to the use situation, press the end of the locking device backwards, and the box cutter knife is in a locked state, so that the blade is not easy to fall off when you use it. 【Detachable Design】The box knife have a knife remover at the rear, and the knife remover can be pulled back to easily remove the blade, which is convenient for blade replacement and prolongs the use time of the retractable box cutter. Box Cutter Retractable utility knife