SaltDogg TGS07 Tailgate Spreader with 200-Pound Vibrator Kit
Click below to buy on Amazon: http://www.amazon.com/gp/product/B005QZMVWO?tag=sukses2015-20

Can be used with salt sand and other free flowing material
Materials spread from 3 to 30 with adjustable deflector
Includes an installed 200 lb vibrator kit to break up compacted material
Features variable speed control and vibrator switch from inside the comfort of the cab
Includes dual action polymer lid to prevent spillage and moisture