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William Optics 3.5" to 2" RotoLock Visual Back - Blue - F-ROTO-A3.5-2BU


William Optics 3.5" - 2" RotoLock Visual Back - Blue Version

This RotoLock Visual Back threads onto the rear of the Fluorostar FLT with 3.5" focuser attached to provide a 2" diameter opening for diagonals, cameras, or other accessories. Eliminates the need for compression rings! Installation takes mere seconds. Simply rotate clockwise to lock in and center a 2" accessory, and rotate counterclockwise to discharge. Internal ball bearings provide a gentle but audible click to let the user know when this visual back is opened or closed, enabling ultra smooth operation in the dark. Ribbed exterior provides a solid grip.