What does it mean when they are advertised as non-ball end ?

Non-ball end means they are classical type strings that you wrap at the end on the bridge to string. Most steel string and electric guitars have a slot for a ball (or in the case of Fender, "bullets" ) on the bridge that the string is set in to hold in place. Most classical guitars do not have bridges like this, they have bridges set up to tie the strings on. Here is a good video that shows how to change classical strings with tie on: https://www.youtube.com/watch?v=8TGqL_lk2cE

What is the difference between tension, and hard tension, when it comes to these guitar strings?

Normally strings are classified as light, normal and hard tensions. Hard tensions are thicker in diameter and when tuned are tighter therefore harder to press. Also Hard tension do sound louder.

if I have a guitar 3/4 size, do I need to buy 3/4 strings?

Better to use 3/4 strings for your 3/4 size guitar. Guitars and guitar strings follow "standards" in their manufacture. They're made to match one another to produce accurate sounding notes. The distance between one fret to another is the standard they adhere to. 3/4 size guitars have shorter fret to fret distances - while full size guitars have longer fret to fret distances. So if you use full size classical strings on your smaller 3/4 size guitar the notes will sound lower than standard.

What are the individual masses of each string?

I don't have a source for what they weigh but the string gauges are shown in the third picture (the back of the package) and are: .0285 , .0327, .0409, .303, .036, and, .044. Hope that is what you were really asking.

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D'Addario Student Nylon Classical Strings EJ27N-3D, Normal, Full | D'Addario Student nylon strings deliver warm classical tone, easy playability, stable tuning and learning performance.

D'Addario Student Nylon Classical Strings EJ27N-3D, Normal, Full | D'Addario Student nylon strings deliver warm classical tone, easy playability, stable tuning and learning performance.

Product ID: 79156371

Details

Brand
D'Addario
Color
Bronze
Instrument
Classical
String Gauge
Medium
String Material Type
Nylon

🎸6-string classical set

🔗Silver-plated copper wound basses

🇺🇸Made in USA precision

COP 167689

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Description

🎶 Elevate your first chord with strings that strike the perfect balance of warmth and clarity!

AUTHENTIC TIE ENDS - Classic tie-end design for easy installation and secure fit on classical guitars.
ECO FRIENDLY REWARDS - Includes recyclable packaging with Players Circle points for every purchase.
PERFECT FOR BEGINNERS - Optimized warmth and projection tailored for student guitarists.
PREMIUM BUILD QUALITY - Nylon core basses with silver-plated copper winding ensure durability and rich tone.
TRUSTED AMERICAN CRAFTSMANSHIP - Manufactured in New York to exacting standards for consistent performance.

D’Addario Classic Nylon Student Guitar Strings (EJ27N-3D) are a 6-string set designed specifically for beginner classical guitarists. Featuring nylon core basses wound with silver-plated copper and clear nylon trebles, these medium gauge strings deliver a warm, balanced sound with excellent projection. Made in the USA with tie-end construction for easy installation, they come in recyclable packaging that offers Players Circle reward points, making them a smart, sustainable choice for students and educators alike.

Specifications

ASIN	B077MN2RDQ
Best Sellers Rank	#846 in Musical Instruments ( See Top 100 in Musical Instruments ) #4 in Classical Guitar Strings
Body Material Type	Nylon
Brand Name	D'Addario
Coating Description	Uncoated
Color	Bronze
Customer Reviews	4.5 4.5 out of 5 stars (22,797)
Finish Type	Copper
Global Trade Identification Number	00019954255619
Included Components	18 individual guitar strings
Instrument	Classical Guitar
Item Type Name	Classical Guitar Strings
Manufacturer	D'Addario &Co. Inc
Manufacturer Part Number	EJ27N-3D
Material Type	Nylon
Model Name	EJ27N
Model Number	EJ27N-3D
Number of Items	1
Number of Packs	3
Recommended Uses For Product	Classical Guitar
Set Name	EJ27N-3D
Sound Profile	Balanced, warm and projecting
String Gauge	Medium
String Material Type	Nylon
UPC	019954255619
Unit Count	3 Count
Warranty Description	Replaced if defective.

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COP 167689

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In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

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