Did not come with and paperwork. The Outer Limit from prestigious turntable manufacturers Clearaudio has been carefully and intelligently engineered to improve vinyl record playback by clamping the edge of the record. The precision-milled ring increases the pressure placed into the record by adding an extra 1.5kg worth of weight, adding to the flywheel effect and flattening minor warps found within the vinyl. This drastically and significantly increases the sonic integrity of the recording. The Outer Limit is accurately positioned by sliding the locator on the Clearaudio platter.Place your record on the platter and it locator will accurately position the ring on the platter. "Recommended Component" - Stereophile Magazine Clearaudio's Outer Limit Turntable Ring is a record clamp with a difference. Instead of fitting over the spindle and sitting on the record label, the Outer Limit fits on the outer edge of an LP. Most LPs are warped to some degree, and the Outer Limit carefully and accurately presses your LP flat against the platter. Outer Limit won a "Recommended Component" citation in the April 2003 issue of Stereophile. According to Michael Fremer, it blackened backgrounds, solidified images, and made them'pop' in three dimensions. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Home Audio Components\Record Players/Home Turntables". The seller is "zuddies_restorations" and is located in this country: US. This item can be shipped worldwide.