KS-510 adult's stainless steel stethoscopeSize of chest piece cover of stethoscopes: D1 47MM, D2 (clock cover) 37MM; Height of chest piece: H 24MM; Length of ear piece plus rubber tube: L 740MM. MEAS: 68X35X25cmQuantity: 20PCS/CTNN/G Weight: 9/11KGSPRODUCT DESCRIPTIONWith a special round body design, this product is intended to be used in identifying high and low heart tones as well as cardiovascular sounds. The conducting tube features an embedded elastic sheet with high durability and a sound-collecting button outside the its Y type cavity to facilitate the sound conduction. Manufactured by imported, fully automatic CNC lathe and Japanese tooling, the chest piece features delicate texture, highly stereo profile, and high consistency. Produced from poisonous stainless steel tube with exceptional surface finish and high durability, the ear piece is designed to be automatically adjustable according to the user's facial form and angle of auricles to achieve an optimal performance of wearing. Manufactured from highly flexible PVC synthetic material, the earphone can perfectly fit the auricle with no sound leakage and feels good in long time use. Moreover, it can be easily disassembled and cleaned to avoiding infection of doctors' ears. The concave-convex patented design enables the product to wag up and down according to force on it and therefore produce two different acoustic frequencies together with a sound-collecting cavity. The vibrating diaphragm is produced from PE compound film, a resin imported form Germany with high flexibility, resistance to high and low temperature, minimal susceptibility to deforming and ageing, and high fidelity. The stethoscope is guaranteed for 2 years in use normally cases. Model NO.: KS-510 adult's stainless steel stethoscope Packing: colorful box with two covers and sponge base Company: Wuxi Kaishun Medical Appliance Factory