http://www.venturediving.com/images/forum-tank2go.jpg
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Here's a really useful bit of kit for those of you with twin sets: a stainless steel carrier/trolley that allows you to carry and move your cylinders and ancillaries easily and effectively. Simply fitted by a pair of wing-nuts that hold the Tank2Go carrier to the twinning bands, so it becomes an intrinsic part of your equipment; which stays with you throughout the whole day's diving - in and out of the water.
Lots of other benefits, but go to www.venturediving.com for more information and pictures.
Safe diving