The WA0004 and the WA0010 are the same spools, the package size is the difference. The WA0004 provides you with only 2 spools, while the WA0010 is a six-pack. Thank you for choosing Worx!

Does Weed Eater string size matter?

String Trimmer Line Thickness

This probably comes as no surprise to anyone, but the general rule with string trimmer line is that the tougher the application, the thicker the line needs to be. A larger diameter will increase the power and durability of the line, which leads to less breakage and wear-out.

What kind of weed eater string do I need?

Light: 0.065- to 0.080-inch line is best for trimming grass around the house and whacking down common lawn weeds from around driveways, walkways and fences. Medium: 0.080 to 0.110-inch line is best for homes with larger lawns, or gardens overgrown with weeds that have tough, heavy stems. Heavy: 0.110-inch and above.

Why does my line keep breaking on my trimmer?

The most frequent cause of a line breakage is through contact with something in the garden. Usually this is the result of the cutting head being taken too close to objects, e.g. garden stones, paving edges, walls etc.