View 5 Photos View 0 Videos Werk-Brau 71" Arm Extension for SK400 Boom $2,700 USD 71" ARM EXTENSION FOR A SK400 100MM PIN HOLES 18" INSIDE EXTENSION 17 5/8" WIDE STICK TO BUCKET POINT. CALL FOR MORE INFORMATION ConditionUsedStock Number#5102 MLS Number10850076CategoryBoom Attachments Last Updated3/24/2026 LocationHolland, MI, US Sold ByHES Equipment / A&B Farms (844) 656-___ SHOWNUMBERCall Seller Email Seller Save More Info