12 Pieces Mini Retractable Utility Knife Box Cutter Letter Opener Pocket Knives Colorful Mini Open Slides For Letter12 Pieces Mini Retractable Utility Knife Box Cutter Letter Opener Pocket Knives Colorful Mini Open Slides For Letter Suitable: You can receive 12 pieces of portable mini utility knives in 6 different colors, enough quantity can meet your daily needs, suitable for box opening, paper cutting, letter opening and DIY crafts Quality material: all 12pcs mini portable utility knives are made of reliable plastic and alloy blades, no rust for long time use;