Woodhaven 3010 Rail Kit Our Rail Kit eliminates you having to make your own wood rails for our 3000-3004 Planing Sled (not included). Easy to set up and use. Multiple Rail Kits can be connected together to cover any length part. The Rail Kit is 48 long. Includes two MDF Fence & Base Rails, plus two 48 aluminum Double Tracks for the Planing Sled to ride on. Four height adjusters, two in the front and two in the back, allow easier height adjustment compared to homemade rails. Just loosen four knobs and change the stock height setting as needed. Stock length capacity is 12 -16 less (depends on width of stock) than the combined overall length of the Rail Kits. Rail Kit reduces the stock width capacity of the Planing Sled by 1-1/2. Lifetime guarantee against defects in material or workmanship. Made in the USA!