Grover 505BC6 Roto-Grip Mini Locking Rotomatic Tuners, 6 In-Line - Black. A smaller version of the regular size ROTO-GRIP® lockers for the in line and smaller headstocks or for those who prefer a lighter feel.Insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw. Locking machine heads utilize the famous 18:1 Rotomatic design with a "thumb screw" mechanism. Perfect replacement for the most standard machine heads. Item shown: Grover 505BC6 Roto-Grip Mini Locking Rotomatic Tuners, 6 In-Line - Black Model #: GR505BC6 UPC: 082562083004. If required, please return to us within 30 days of receiving the item. Items that are altered in any way will not be accepted. Please do not leave a poor feedback or open a dispute without contacting us. Give us a chance to help you first... We are here to help and assist you. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Tuners". The seller is "sologuitars" and is located in this country: CA. This item can be shipped to Canada, United States, France, United Kingdom, Germany.