The Minoura Mag Riser G Front Wheel Block is simple & effective. The Mag Riser G supports your front wheel when using a turbo trainer, keeping it level with your rear wheel & making your training setup more stable. The Mag Riser G also doubles up as a carry handle for your Minoura trainer. Features corrects the bike position on trainer to simulate natural riding position. Dual tire design compatible with both 700c & 26”wheels. Wide design with a low-centre of gravity for extreme stability. Makes it easy to transport your Minoura trainer with quick release skewer.