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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🎶 Elevate your sound with Martin’s bright bronze brilliance!

TOUR READY DURABILITY - Heavy-duty bronze strings engineered to withstand intense practice and live performances.
VERSATILITY FOR EVERY STYLE - Perfect for fingerpicking, flat-picking, and genres from folk to rock—your all-in-one tone solution.
TRUSTED MARTIN CRAFTSMANSHIP - Join the global community of musicians who rely on Martin’s legendary quality and tone.
BRILLIANT CLARITY EVERY STRUM - Experience deep bass and sparkling trebles that bring your guitar’s voice to life.
LIGHT GAUGE FOR EFFORTLESS PLAY - Smooth tension and easy bending with a 0.012 to 0.054 gauge set designed for comfort and precision.

The C.F Martin Original Acoustic M140 strings are a premium set of 80/20 bronze light-gauge strings (.012-.054) designed to deliver bright, clear tones with balanced tension (167.3). Engineered for durability and versatility, these strings suit all playing styles and genres, making them a top choice for professional and touring musicians seeking reliable, high-quality acoustic guitar strings.

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Product Dimensions	10.67 x 10.67 x 1.02 cm; 30 g
Item model number	M140
Body Material	Bronze
Colour	80/20 Bronze
Guitar Pickup Configuration	Combination
String Gauge	.012
String Material	Bronze
Number of Strings	6
Guitar Bridge System	Adjustable
Material Type	Bronze
Size	Light ( 12-54 )
Item Weight	30 g

C.F Martin Guitar Original Acoustic M140 80/20 Bronze Acoustic Guitar Strings - Light, Light ( 12-54 )

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