Side Arm Bracket Side Arm BracketSide Arm/Brackets are used to Extend Work area outward21.5″ (SA21)21 1/2″ Side Arm Brackets to extend work area outward up to 21 1/2″ Wt. 10 lbs.30″ (SA30)30″ Side Arm Brackets to extend work area outward up to 30″