Professional-grade ID labels feature extra-strong adhesive that is ultra-permanent and sticks to almost anything, including wood, metal, glass, rough plastic and cement. Durable material can withstand moisture, scuffs, tearing and moderate cleaners, such as ammonia, hand sanitizer, bleach and soap. Water-resistant, tear-resistant labels are great for quick labeling of tools, equipment, bins and various objects around the warehouse. Handwrite on the 4" x 6" sheets using a permanent marker for long-lasting identification (standard ink will wash off). Each sheet includes four labels (1-1/4" x 3-1/2").