ALL TERRAIN ALL TERRAIN EASE OF MOVEMENT. Ease of movement on any type of floor. IPC’s exclusive feature: all models are available in 3 or 4-wheel versions. Applied to: PW-H28 PW-H50 PW-H100 Benefits The 3-wheel version can be perfectly handled on all industrial surfaces. The 4-wheel version can be easily used on any type of surface, such as concrete, rough terrain, gravel, etc.