The Wide Slide is a 8" wide x 3/8" thick multi-groove slide. The main purpose for the Wide Slide is to allow various snowmobiles with different width ski stances, including the new dual runner skis, to fit onto one trailer. Then your trailer is protected no matter whose snowmobile is on it. Another advantage of the Wide Slide is its low profile design. Wide Slides protect the bed without creating a 1-1/4" obstruction on the trailer, allowing you to still use your trailer for other things without having to remove the slides. Wide Slides are a 10 foot long, one piece construction design. They have pre-drilled and counter sunk slots to allow for expansion and contraction. They also come with heavy duty stainless steel screws that we provide.