AMSmooth Disposable Vaginal Speculum. Made of polystyrene with see-through clarity, AMSmooth disposable vaginal speculum provides smooth one-handed operation for easier insertion, requires no lubricant except water, and allows for secure positioning without slippage. Single use eliminates cross-contamination. The self locking feature speeds examination and saves time. Self Locking Feature. Clean Polystyrene. Single Patient Use. Graves Style. Case of 100.