Check the listing for details. Front Wheel Riser, Stabilizing Leveling Block Support for Indoor Bike Trainers. Color: Black, Condition: New. Listed at 14.99 USD. Front Wheel Riser, Heavy Duty Sturdy Molded Plastic Bicycle Stabilizing Leveling Block Support for Indoor Bike Trainers Training Exercises Introduction:The perfect accessory to go along with the bike trainer. The riser block with its skid-proof rubber padding provides extra grip to hold onto the floor, keeps your bike steady without wobbling. Ideal for mountain bikes, street bikes, race bikes, road bikes, folding roads and many moreFeature:Our bike trainer wheel block is compatible with most road and mountain bikes tire widths; 20c, 23c,25c, 28c, up to 50c (5cm wide)This front wheel riser block for bike trainer raises your front wheel, enabling a natural riding position. Provides 1.5-inch elevationOur front wheel riser block for indoor bicycle trainers has a rubber padded base that provides extra grip to hold onto the floor and prevents slipping and vibration. It also keeps your flooring from scratchingThis bike front wheel riser block has molded plastic construction that provides excellent abrasion resistanceDimension: 9" x 5" x 2.5", wheel width 2"Specification:Dimension: 9" x 5" x 2.5"Material: Molded PlasticWeight: 4.8 ouncesPackage Content:1x Front Wheel Riser, Sturdy Molded Plastic Stabilizing Leveling Block Support for Indoor Bike Trainers Training Exercises