Ballpoint needles are manufactured (as the name suggests) with a ball on the point. The ball parts the fibres/threads of the fabric you are stitching rather than piercing them as a conventional needle would.
This makes the needle ideal for stitching knitted materials or those with elastic properties such as lycra & jersey fabrics. It stops laddering and ensures the elastic qualities remain intact as the fibres of the fabric are still able to move freely.
Sizes 75 through to 100. 5 needles per card.
Also assorted packs of sizes 70-90s and 70-100s.
Full Info Below.