DK93 Plastic Snap Press Bundle

Size Guide
Choosing the Right Plastic Snaps

Which size works best for you will depend on a number of variables, such as the fabric you are using, its density and compression levels, how hard you are able to press, and your own personal preference.  For these reasons, we are unable to provide specific size recommendations for every scenario. 

The 3 most commonly used sizes are:

  1. Size 20 regular length
  2. Size 20 extra long
  3. Size 16 regular length

Not sure? Try the variety size sampler kit.

KAM Snap Size Comparison Chart


Size 20 (12.4mm or 1/2" cap diameter)

  • Size 20 Regular Length (5.6mm prong) is commonly used for general applications with sturdy fabric, including baby diapers, regular clothing, and household projects.   This is the most popular size of plastic snaps and is a good size to start with for most projects.  Days for Girls menstrual pads are made with this size.
  • Size 20 Extra Long (6.2mm prong) is necessary for very thick material like double layers of marine vinyl for key fobs, medium weight leather, and chinese prefold diapers. 
  • Size 20 Extra Short(4.6mm prong) is good for thinner material where you still want a good, strong grip such as baby diapers made with just 1-2 layers of PUL.

Size 16 (10.7mm cap diameter)

  • Size 16 Standard Length (4.6mm prong) is most commonly used for thinner, stretchy, or delicate material such as baby/toddler clothing, doll clothing, multiple layers of grosgrain ribbon, and anything intended for small children to snap/unsnap. Size 16 sockets and studs have a gentler grip compared to size 20 sockets and studs, but the grip is still very secure so any fabric prone to tearing should be reinforced with more durable material at the point where the snaps are installed.
  • Size 16 Long-Prong is available in lengths ranging from 5.2mm - 7.2mm long for thicker material.

Size 14 (9.7mm cap diameter)

  • Size 14 Standard Length (3.5mm prong) is extremely short and should only be used on very thin material, usually single layers. 
  • Size 14 Long-Prong (5.0mm prong) for thicker material.

Size 22 (14.1mm cap diameter, 7.0mm prong)

  • A larger snap which can be used in similar situations as size 20 long-prong.

Size 24 (14.8mm cap diameter, 7.5mm prong)

  • Our largest, strongest snap which should only be used in very heavy duty applications with thicker material such as canvas tote bags, nylon webbing, dense leather and thick jackets. Because the grip is so strong, it can tear through more commonly used fabric.
  • Everything you need to get started:
    • DK93 professional table press
    • 100 sets size 20 regular length plastic snaps (10 sets x 10 colors) with matching 3-piece dies
    • Additional dies for other plastic snap sizes, metal snaps, and grommets available here.

    International shipping: a press bundle + up to 2000 bagged snaps fit in a USPS flat-rate box for $39.99 shipping to Canada or $69.99 elsewhere. Select USPS shipping at checkout and overpaid charges will be refunded when your order is processed. Please read Disclosures.
  • Presses and dies are industrial equipment and may have scratches, flaked paint, rust, oil or other cosmetic imperfections that will not hinder their function. Remove any remaining oil on dies by attaching several snaps to scrap fabric. Returns or exchanges cannot be accepted unless a defect affects function.

    Most presses ship in flat rate boxes to minimize shipping costs. Flat rate boxes offer limited room for protective packaging and the box may suffer external damage upon receipt. Package contents are rarely damaged but are insured as a precaution. You may select UPS shipping at checkout for an additional charge if you prefer extra padding.

    Warning: Operate away from and keep out of reach of children.  Never release handle until spring is fully unloaded. Loose fasteners are a choking hazard - small parts. Not for children under 3 years.
  • Click here for how-to videos instructions.
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