The VMK Series of electric vibrator motors features die-cast aluminum and epoxy-coated bodies with a chrome-plated roll cage that provides superior durability. The unit has a solid aluminum faceplate and forward-mounted exhaust ports and air intake holes located in rear to prevent clogging. Only a screwdriver is needed for maintenance. The 15-amp VMK 2750 provides versatility, while the 20-amp VMK 3500 wields power. Global Mfg. Inc. 800-551-3569.