http://www.quikrete.com/catalog/Tubesand.html
I keep four of these in the bed of my Ranger.....works real well with my studded tires.
When winter is over, I stack 'em in the garage....to keep the sun from beating on them and aging the bags.
They usually last 2 or 3 years before the bags start to fall apart.
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'72 C-10
350 w/Lunati Voodoo cam (207*/213*, .437/.454), Performer intake, 625 Road Demon Jr. and Hooker headers.
Support your community, support yourself. Buy local, buy American
(or Canadian).