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Tools

Great tools make knitting and crochet even more enjoyable. At String Theory Yarn Co, our knitting tools and crochet accessories are chosen with the same care as our yarn—because the right tools make every stitch smoother, faster, and more fun.

Smart Tools for Knitters and Crocheters

Our collection includes the essentials every maker reaches for again and again: interchangeable knitting needles, circular needles, crochet hooks, stitch markers, row counters, and tapestry needles. Whether you’re casting on a sweater or finishing a pair of socks, the right knitting notions can make all the difference.

Beautiful, Well-Made Notions

We love tools that are not only practical but also a pleasure to use. That’s why our shelves feature thoughtfully designed knitting accessories, clever gadgets, and beautifully crafted notions made by small makers and trusted brands. Many are created by artisan toolmakers and women-owned businesses who share our love of craft.

Small Tools, Big Difference

From project bags that keep your knitting and crochet organized to clever yarn tools that save time and frustration, these little helpers turn good knitting days into great ones.

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  • String Theory Yarn Co

    T-pin Tins

    $10.00

    Each tin contains 50 rust proof t-pins for blocking your knit or crocheted items.

  • String Theory Yarn Co

    Flower Markers

    $18.00

    Clip your flower stitch markers to your project bag and always have them handy. Each set includes a carabiner clip and 12 flower-shaped markers in ...

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  • String Theory Yarn Co

    Acorn Keepers

    $19.00

    Clip your acorn to your project and always have a few stitch markers handy. Each set includes 5 silver-colored brass ring markers.

  • String Theory Yarn Co

    String Theory Tape Measure - yellow

    $4.00

    The String Theory measuring tape is a must-have tool for any project bag. The bright yellow color makes it easy to spot in your project bag. 

  • katrinkles

    Sock Multi-tool

    $26.00

    This handy dandy Sock Multi-Tool with Yarn Cutter is the tool you never knew you needed!  This cute sock shaped key fob clip has Kitchener instruct...

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  • ST Needle Gauge - String Theory Yarn Co
    katrinkles

    ST Needle Gauge

    $18.00

    This handy tool has everything you need to make a gauge swatch and check your progress along the way. You can identify needle sizes from US 0 to 15...

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  • Socks Rule - String Theory Yarn Co
    katrinkles

    Socks Rule

    $25.00

    Slip this ruler right into your sock while it is still on the needles to easily gauge when to start the toe (or the gusset/heel if you are knitting...

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  • WPI Yarn Weight Gauge in Tools - notions | String Theory Yarn Co
    katrinkles

    WPI Yarn Weight Gauge

    $11.00

    Measure the thickness of any yarn: Lay yarn into the grooves or wrap it into the inch-wide notch and compare the number of times your yarn fits in ...

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  • mini tool wrap and turn in Tools - notions | String Theory Yarn Co
    katrinkles

    mini tool wrap and turn

    $11.00

    These lightweight, 2.5" square tools are handy to have along, whether you tuck them inside your knitting bag.

  • mini tool make 1 in Tools - notions | String Theory Yarn Co
    katrinkles

    mini tool make 1

    $11.00

    These lightweight, 2.5" square tools are handy to have along, whether you tuck them inside your knitting bag

  • mini tool kitchener in Tools - notions | String Theory Yarn Co
    katrinkles

    mini tool kitchener

    $11.00

    These lightweight, 2.5" square tools are compact and handy to have along, whether you tuck them inside your knitting bag

  • 2" Gauge Swatch - String Theory Yarn Co
    katrinkles

    2" Gauge Swatch

    $12.00

    These handy square tools are used for measuring gauge swatches knit or crocheted in any type of yarn. Simply hold the tool up against your work and...

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