Colored Single Head Stethoscope, colored head with matching color tubing. For adult, diameter is 46mm, For child, diameter is 36 Specification : Single Head Stethoscope. Silver Aluminium-Alloy chest pieces, oxidized & anodized for choice, diameter is 46mm. Standard Y-tubing, existing color: Green, Blue,Yellow, Red, Pink, Orange, Black, Grey, etc, can make all kinds of color.Packing : 1pc/box