30" Diameter x 3/8" Wall Drums; 3/8" Thick Inner End Plates; 1/2" Thick Outer End Plates; 2 7/16" Drum Shafts; 2 7/16" Greaseable Ductile Pillow Block Bearings; 6" x 6" x 1/4" Wall Main Frame; 6" x 4" x 3/8" Wall Tongue; 6" x 4" x 1/4" Wall Wing Frames; Height Adjustable Pintle/Clevis Hitch; 7000 lb. Drop Leg Tongue Jack; Double Safety Chains - 21,000 lbs. each; Dual Wheels w/ 11L-15 8-ply Tubed Tires; 3000 psi Hydraulic Cylinders; Drum Scrapers; Implement Lights & Reflectors; Balanced Frame Design for min. tongue weight; Models from 20'6" to 34'6".