The Gardena 3503-20 Combisystem Single Holder is a versatile accessory for garden hand tools, suitable for diameters ranging from 18 to 40 mm. The black coloured holder from the reputable brand Gardena is designed to securely attach and hold a variety of gardening tools, making it a convenient and practical addition to any garden or patio setup. Perfect for keeping your tools organized and easily accessible while working in the garden.