The Stelan High Quality Plastic Whistle set includes 2 black whistles designed for school, office, or home use. Each whistle measures 50mm and features durable plastic construction with an attached cord for convenient carrying. Key features: • Set of 2 black whistles • Made of high-quality plastic • 50mm size • Includes carrying cord • Suitable for multiple environments • Durable construction These practical whistles from Stelan are packaged in a convenient blister pack for easy storage and transport. The black color provides a professional look while the plastic material ensures lightweight yet sturdy performance. The attached cord allows for easy wearing around the neck or attaching to bags and equipment.