Is there a full set of 6 strings in each pack and long enough for full size guitar?

See the product information, this will answer your query: http://www.amazon.co.uk/Martin-M170-Acoustic-Guitar-Strings/dp/B0002CZST4/ref=cm_cd_al_qh_dp_t

are they nylons or steels?

Hi there. They are steel core with a bronze wound cover on 3rd (g) to 6th string, I think, if they follow same pattern as the light ones I buy (red packet), or just possibly 4th (d) to 6th string. A wound 3rd is preferable for fine tuning but not so good for bending. Martin strings are an excellent product, especially at the price quoted. PWN

What's the difference between cutom light, extra light, light and medium? I'm not sure which one to choose...

Strings are also measured in gauges so 10 11 12or 13 so extra light is 10 custom light is 11 light is 12 and medium is 13 ... But if your a beginner or not playin long I would suggest 11 or custom light .. Should be easier on the fingers regards Cadno

i use middle strings they hurt my fingers and i muting the strings , how would i improve it , getting extra light strings?

Hi I have used normal strings and yes they do hurt, now I use light strings or extra light strings and I love them, they are easer on the finger and they sound good to, the ones I like are Elixir Acoustic light 012-053 nanoweb ultra thin coating with anti-rust plane steels. not cheap but good and they last along time, hope this helps.

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Authentic Acoustic Flexible Core

Product ID: 178813667

Details

Brand
MARTIN
Colour
SP Flex Core &
Instrument
Acoustic
String gauge
Custom
String material type
Phosphor

⚡Flexible core reduces finger fatigue

🎸Custom 11-47 gauge for balanced tone

🔔Bright, rich phosphor bronze sound

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4284 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Unlock your guitar’s true voice with effortless style and vibrant tone!

PRO GRADE DURABILITY - Phosphor bronze with silk wrap ensures long-lasting brightness and smooth feel, set after set.
TRUSTED CRAFTSMANSHIP - Made by CF Martin & Co., the gold standard for authentic acoustic guitar strings worldwide.
EFFORTLESS PLAYABILITY - Flexible core design lets you bend notes with ease—no more finger fatigue during long sessions.
VERSATILE GENRE MASTERY - Perfect for fingerpicking or strumming across blues, folk, country, and rock—your all-in-one tone solution.
BALANCED SONIC BRILLIANCE - Custom gauge strings (11-47) deliver a full spectrum of bright highs, warm mids, and rich lows.

Martin MA130FX Strings feature a custom 11-47 gauge phosphor bronze and silk wrap with a flexible core, designed to reduce finger fatigue while delivering bright, balanced acoustic tones. Ideal for fingerstyle and pick playing across multiple genres, these professional-grade strings combine durability and playability, crafted by the renowned CF Martin & Co.

Specifications

ASIN	B07Y2KKGZS
Best Sellers Rank	1,202 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 78 in Guitar Strings
Body Material Type	Phosphor Bronze & Silk
Brand Name	MARTIN
Coating Description	Standard coating
Colour	SP Flex Core Silk & Phos Custom 11-47
Country of Origin	Mexico
Customer Reviews	4.7 4.7 out of 5 stars (704)
Finish Type	Bronze Plated
Global Trade Identification Number	00729789580533
Included Components	6 x Acoustic Guitar Strings (11-47)
Instrument	Acoustic Guitar
Item Type Name	Martin MA130FX Strings SP Flexible Core - Silk & Phosphor Custom ( 11-47 )
Item Weight	32 Grams
Manufacturer	CF Martin & Co.
Manufacturer Part Number	MA130FX-U
Material Type	Phosphor Bronze
Model Name	MA130FX
Model Number	MA130FX
Product Warranty	1.
Recommended Uses For Product	Fingerstyle blues, Americana, country, bluegrass, ragtime
Set Name	MA130FX
String Gauge	Custom
String Material Type	Phosphor Bronze
UPC	729789580533

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