Spaghetti is one of the most popular pasta ... but it’s a bit thicker in diameter. Like angel hair pasta, capellini pairs well with lighter oil-based sauces vs. ragus (meat sauces).

This pasta shape is reminiscent of string — it's thicker than capellini (angel hair) or vermicelli but noticeably thinner ...

Spaghetti remains the simplest pasta shape to produce on an industrial ... Even thinner than ‘spaghettini’ is ‘capellini’, which has a diameter of between 0.85 and 0.92 mm.