This is a 42′ Simon Telect 92-42 digger derrick on a 1993 Rolligon track machine. This has a 17,250 lbs digger derrick capacity with a 42′ sheave height, and 4 hydraulic outriggers mounted on a 1993 Rolligon RA15 Roughneck crawler powered by a John Deere diesel engine.SR 4196