The EZ Rail System - in combination with the Alaskan saw mill - creates a straight and level first cut along a log. Connector kit #11882, sold separately, connects any combination of 9ft. or 5ft. guide systems together. U.S.A. Application: Creates a straight and level first cut, Rails (in.): 9 ft, Dimensions L x W x H (in.): 108 x 4 x 6