Please note: this product is keycaps, it is not a keyboard!!!It is suitable for ANSI 104 keys layout mechanical keyboard with "+" shape switches.Product material: PBTWhether to support ergonomics: supportFeature:Keyboard with most standard layouts. Durable and long-term use, easy to install.Note:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.