PROFILE Column Cranks

Marsoni

M251S

$352.00

Get it in 3 business days with 1 day shipping. Friday, May 29

PROFILE Column CranksProfile's Column cranks are arguably the burliest cranks on the planet. Used by riders around the world who demand strength and durability from their drivetrain. The column cranks feature heat treated oversize 4130 Chromoly crank arms with Profile claiming that these are the strongest they've ever produced! Further strength is gained from the 22mm GDH CrMo axle with 8mm hex aluminum axle bolts. Make them ever even lighter with a titanium axle upgrade.

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*The Art of Rock Hounding* is an absolute gem—literally! This 7-in-1 guide has everything I need to dive deeper into the world of rockhounding, from identifying rare minerals to uncovering fossils in the field. The techniques and expert tips make every trip more exciting and rewarding. Whether I’m out exploring or just learning more at home, this book keeps me hooked!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 17, 2025

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Julian López

Fort Morgan, US

★★★★★ 4

A very useful guide

Format: Kindle

I gave the book to my dad since he is interested in these topics. What he liked the most was the large amount of information it contains, such as information on semi-precious stones.

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Reviewed in the United States on January 18, 2025

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Marie Whyte

Birmingham, US

★★★★★ 5

Great book

Format: Paperback

My husband loved it great layout and information

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Reviewed in the United States on November 30, 2025

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Mare

Pawtucket, US

★★★★★ 5

Rocks

Format: Paperback

Love it...lots of info for the rockhounder

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Reviewed in the United States on September 23, 2025

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Eddie B

Houston, US

★★★★★ 1

Don't recommend.

Format: Paperback, Format: Paperback

Not at all what I was expecting. It must have been self or independently published. Returned. I will definitely be scrutinizing my next book purchase on this subject to more stringently. Also, Not that I care but claiming to be "7 books in one" is a false claim. But I kind of figured that before I purchased it. Its just bad. Big turn offs for me. -No/poor editing. -Page formatting makes my eyes bleed. -The font tries too hard to be fun--especially for an instructional book. -pages feel cheap. -image quality is abysmal. - none of the information I was looking for and lots of information I wasnt.

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Reviewed in the United States on May 22, 2025