Specially designed 3/16" Armor plate (Hardox 450) steel bar, 44" long double ended chain saw bar for use with 30" mills. Fits any brand chainsaw with included bar stud adaptors & requires one of two options: two power heads of equal size, or G975 Helper handle with roller & G801A Oiler kit (included with "C" packages). Compatible with both G729-3 (3/8 .063) & G730-3 (.404 .063) chain, 124 links of which are needed for use. Designed for use with G778-30 milling attachment to make cuts of 26" or less. Proudly made in the USA.