leonard odjob concrete & material mixer a.m. leonard easier than mixing in a wheelbarrow — and less messy! easy to use, handy to pour, a snap to clean, and compact to store! the leonard odjob concrete & material mixer makes mixing clean and easy. the patented design allows ingredients to move back and forth resulting in a perfect consistency. use the lid to pre-measure water when mixing with dry concrete or other materials. use the odjob for more than just concrete! use it to mix oil, seed, fertilizer, compost, or paint. the heavy-duty polyethylene construction makes this product rugged enough to withstand regular use.