Orion 7224 4-Eyepiece Rack for Dobsonian Reflector Telescopes Keeps your telescope eyepieces within convenient reach Aluminum racks attach easily to the sideboard of any Dobsonian base Features keyhole slots for quick release from Dobsonian telescope base 4-Eyepiece rack hold three 1.25" telescope eyepieces and one 2" eyepiece Never fumble with eyepieces in the field again - this eyepiece rack keeps your oculars ready for quick action