Large Wiregate Quickdraws: Standard sized wiregates, ideal for virtually all climbing and particularly for technical mixed winter climbing where a lot of gear has to be placed and clipped whilst wearing gloves.
Small Wiregate Quickdraws: Slightly smaller than standard wiregates that offer a good compromise between weight saving and ease of handling for those carrying a large rack - eg British trad climbers.
Micro Wiregate Quickdraws: Extra small krabs designed for situations where weight saving is more important than handling - eg high altitude mountaineering.
Hybrid Quickdraws: Quickdraws featuring a wiregate on one end and a solid gate on the other.
Solid Gate Quickdraws: Standard sized krabs with solid, rather than wire gates. These used to be the norm up until the late '90s and, despite being heavier than their wiregate equivalents, are still preferred by some climbers. However, they are more prone to freezing up in winter.