








🧱 Lock in your line, lock in your legacy.
The Bonded Mason's Line by Marshalltown is a 500-foot, 6mm diameter braided nylon string designed for masonry and archaeology professionals. Engineered to resist moisture and dryness, it offers high tensile strength and durability without fraying. Available in multiple colors and sizes, this USA-made line combines global materials with expert craftsmanship to deliver reliable performance on every job site.









| ASIN | B001RJ70F6 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #40,601 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Masonry String Lines |
| Brand | MARSHALLTOWN |
| Color | Yellow & Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,242) |
| Cutting Diameter | 6 Millimeters |
| Date First Available | February 2, 2010 |
| Finish | Brushed |
| Global Trade Identification Number | 00035965002646 |
| Included Components | Masonry Line |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 6 Millimeters |
| Item Length | 6 Inches |
| Item Package Quantity | 1 |
| Item Weight | 4.8 ounces |
| Item model number | Marshalltown - ML613 |
| Line Weight | 150 or 200 |
| Manufacturer | Marshalltown |
| Material | Nylon |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | Marshalltown - ML613 |
| Shape | Rectangular |
| Size | 500 Foot |
| Style | Yellow & Black Nylon |
| UPC | 035965002646 |
| Unit Count | 500.0 Feet |
S**L
a great product!
exactly as advertised. Strongly bonded, no fraying. High tensile strength.
D**E
Great string line!!
Great string line for road building!
G**G
Bought again
Super strong
P**R
Best mason line
Best line like the dots in it so it’s easy to see depth. You will find it extremely hard to break it when it’s new.
M**A
Genial
K**D
Not the Best
I needed some in a hurry and got this brand. If you have the time to wait get the "W. Rose" brand. It has a lot less stretch and just has a more solid feel.
M**Y
Great value
Great value
2**P
It's great!
In my opinion the best line for Masons. And it has a plastic center instead of cardboard so if it gets wet, it's not a mess. Fantastic line!
A**R
Very strong bricklayers line.
J**N
really good line...... tought line
R**A
Best of the best
A**R
Best bricklaying line out there , the only one I would ever use from now on, very tough , amazing line 👍🏻
P**P
Durable, stretchable, nearly unbreakable. 5/5 would buy again.
Trustpilot
2 weeks ago
3 weeks ago