The first disposable scope with performance so good you might want to keep it. The 665 Features: Nurse style diaphragm only single patient use scope. Acrylresin construction throughout is super-lightweight. Non-toxic. ETO sterilizable. May be safely incinerated. Weights just 1.5 oz. for comfort, yet is remarkably durable. Ultra-sensitive diaphragm for outstanding acoustic performance. Individually packaged in a sealed polybag. 10 units per shelf carton. 10 shelf cartons (100 scopes) per case. Yellow only.