Sky Trekker 300 Wheeley Bar for Dobsonian telescopesWe are accepting pre sale orders for our incoming production run due in May. We expect orders placed now to ship on May 31st. We expect that this production run will sell out fast! Sky Trekker 300 Wheeley Bar for Dobsonian telescopes. Our Sky Trekker series Wheeley Bars for Dobsonian telescopes make moving your heavy or awkward Dobsonian telescope a breeze. Quickly roll your scope out of storage to your observing area, level ( using the built in