Paul Melvin Chain Tensioner, Single Speed, 2 Sp, 100g Review Posted by GiantPandaisy July 1, 2018 in Drivetrain Components Paul Melvin Chain Tensioner Chain Tensioner Single Speed or 2 Speed Designed for tough use CNC’d Aluminum Construction Delrin Pulleys Converts geared bikes to single speed Weighs 76 grams! Cycling Outdoor Recreation Parts & Components Paul Sports & Outdoors