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🧵 Tie it tight, see it bright—work like a pro with every line!
The ACE Supply Orange Mason Line is a 500-foot roll of high-quality braided nylon twine, boasting a 170 lb max tensile strength and fluorescent orange color for superior visibility. Designed to resist fraying and unraveling, it’s ideal for professional construction, gardening, and landscaping projects requiring durable, easy-to-handle string.










| ASIN | B0B61ZYFB3 |
| Best Sellers Rank | #339 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Masonry String Lines |
| Brand Name | ACE Supply |
| Color | Flo Orange |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,515) |
| Line Weight | 170 Lb Max Tensile Strength |
| Manufacturer | ACE Supply |
| Manufacturer Part Number | MLR-OR-500-6-BRNYL18 |
| Material Type | Nylon |
| Model Number | MLR-OR-500-6-BRNYL18 |
| Number of Items | 1 |
| Product Style | Fluorescent Orange |
| UPC | 850026074307 |
| Unit Count | 500.0 Feet |
L**L
Strong, consistent, no fraying — exactly what it should be
This twine does exactly what nylon string is supposed to do. It’s strong for the size, holds tension without stretching, and doesn’t fuzz or fray during use. The thickness is consistent along the length, which matters if you’re tying knots that need to stay put. Cuts cleanly, knots easily, and doesn’t slip once set. The bright white color is useful when visibility matters for gardening, bundling, or layout lines. The spool feeds smoothly without tangling or collapsing halfway through. Nothing fancy, no gimmicks, just reliable material that performs predictably. If you need dependable string rather than decorative twine, this is the correct choice.
M**R
Does the job.
This is pretty good string. It is strong enough to pull on without breaking or stretching. The high visibility color makes it stand out to enough to avoid getting wrapped up in it.
K**Y
Good and strong
This is tough and works well. Good deal for the amount and durability
T**R
Perfect for a class
Used this twine for a class building Rube Goldberg devices, and it worked perfectly. It does fray when cut, but is strong and well woven otherwise.
M**N
Nice twine, great thickness
Exactly as described. Great thickness for the project, great strength. Only issues was the end wasn’t separated and after searching for it for several minutes I finally gave up and had to just pull on a strand until I could unwrap it enough to find the end.
J**E
Excellent quality
Very strong, excellent color, I'll use again if needed.
A**D
Perfect for our lab activity!
Worked perfectly for my 8th grade science class and our balloon rocketry lab activity!
A**A
Sturdy and great quality
Great product
A**R
Nothing was mentioned in the description of the string on line, before we purchased it, but on delivery there was a note on the label that a product used (presumably the dye?) has been found, in the USA, to cause cancer. We were not prepared to take the risk and Amazon gave us a full refund. Maybe, the product should be withdrawn from sale?
S**T
Orange leveling line. Good and sturdy. Love the color so people don't trip over it when im laying out
M**L
Corde solide et de qualité
S**D
Good nylon string line. Good value and quality. Can be pulled as tight as you need for construction work.
G**.
Good product!