Class I - Dangerous
The nailer can eject a nail while the switch is in the "off" position, if the trigger is pulled and it is placed on a surface. This can pose a serious injury to consumers or bystanders.
Porter-Cable, of Jackson, Tenn.
Class II - Moderate
The motor coil insulation can be worn away by vibration from the motor, which could pose a shock hazard.
Class III - Low Risk
The lower guard on these saws could stick in the open position, posing a risk of severe lacerations to consumers.