Flexible, high quality rubber construction 18-Slot coverage compatible for all 20mm picatinny accessory rails Enables a flexible and comfortable grip Provides protection for grooves of picatinny accessory rails Low profile accessory for a custom look and personal comfortability In the Box 3X Ladder Rail Cover Specifications: Brand E&L Airsoft Build High Quality Rubber (Thermoplastic Vulcanizates) Compatibility All 20mm picatinny accessory rails Color BLACK California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov