Extreme Max V Slides Snowmobile Dolly System - Aluminum. Our dollies come with "Easy Roll" casters for both the front and rear plates. These casters have oversized 3" wheels with two ply construction and a sintered steel center bushing. This makes the wheels both tough and easy to move. In side by side comparisons our V-Slide system reduced pushing effort by 50percent. Our heavy-duty front plates have double lock straps to assure that the ski stays firmly attached on any surface or direction. The front plates measure approximately 8" long x 10" wide x 4" tall. The rear plate measures approximately 8" across x 4" tall. Features of Extreme Max 5800.0225 V Slides Snowmobile Dolly System - Aluminum Two-ply 3" rubber/nylon wheels Smooth-turning casters and sintered bushings Deep "V" design fits all snowmobile skis Oversized plates and wheels for extra stability Two-year limited warranty Package Contents: Extreme Max 5800.0225 V Slides Snowmobile Dolly System - Aluminum Extreme Max 5800.0225: V Slides Snowmobile Dolly System - Aluminum