Telescopic Column Extension If your tripod is a little uncomfortable - for example, too low when used with binoculars - the 19 - 31 cm freely adjustable column extension will give you a more comfortable view. The column extender has the larger 3/8" tripod thread on the bottom, - the smaller 1/4" thread on the top but two 3/8"-1/4" converters are also included, so you can use it with virtually all photo tripod threads
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