Material:These key covers are made from PVC with Acsergery strong toughness, flexible, durable and waterproof, good for long time use. .Size:Size of this key cap (approx.): 1 x 0.75 x 0.16 inches/ 25.4 x 19 x 4 mm (flexible), make sure it suit your key before purchase. .Multicolor pack: 32 pieces in total 8 Colors: red, black, white, orange, yellow, purple, blue and green, each color 4 pack. .Identify your keys: organize your keys by different color, make them become easily recognizable, pick the needed keys out quickly when you open the door. .Application: this key cap set fits round keys, square end keys, triangle end and hexagonal end keys, flexible PVC make it fit most of standard keys. .