Blue Diamond Attachments Auger Bits 4'' Diameter Rock bits, wit 2'' Hex 105305 Product Description **Requires minimum down pressure of 3,000 lbs. in order to work Rock, asphalt, and frozen ground Solid rock and concrete Cast tooth pockets Drive-in carbide bullet teeth 3/4” thick boring head 4’ standard length 2” hex, 2 9/16” round, 2” round collars available Specification Part Number Model Weight ROCK BITS - - 105305 4" Diameter, Heavy Duty, W/2" Hex 70 lbs 105310 6" Diameter, Heavy Duty, W/2" Hex 66 lbs 105320 9" Diameter, Rock, W/2" Hex 102 lbs 105330 12" Diameter, Rock, W/2" Hex 134 lbs 105340 16" Diameter, Rock, W/2" Hex 203 lbs 105345 18" Diameter, Rock, W/2" Hex 201 lbs 105350 24" Diameter, Rock, W/2" Hex 291 lbs 105355 30" Diameter, Rock, W/2" Hex 340 lbs 105360 36" Diameter, Rock, W/2" Hex 395 lbs Product Documents Brochure * OUR STANDARD COLLAR IS 2” HEX WITH 2” ROUND AND 2 9/16” ROUND BEING AVAILABLE UPON REQUEST. ADAPTERS ARE ALSO AVAILABLE TO MOUNT OUR BITS TO OTHER DRIVE UNITS. EXTENSIONS ARE AVAILABLE IN 2′, 4′ AND 6′ LENGTHS. THE VARIABLE OPTION HAS A HOLE EVERY 12″ FOR USE IN MULTIPLE POSITIONS (WORKS ON 10″ AND BIGGER BITS ONLY) AND THE FIXED IS A SOLID SHAFT. THE FIXED STYLE IS RECOMMENDED IF THE APPLICATION IS VERY STRENUOUS OR WHEN USING HIGH PRESSURE DRIVE UNITS.
