アーム B. ARM B [937B001]S B01 837-42000022 ｱｰﾑ(STD 2.93m) ARM (STD 2.93m) B02 837-42100022 ｱｰﾑ( ﾛﾝｸﾞ 3.92m) ARM (LONG 3.92m) (OPTION) B03 837-42200030 ｱｰﾑ( ｼﾖｰﾄ 2.43m) ARM (SHORT 2.43m) (OPTION) B04 837-42300022 ｱｰﾑ( ｽｰﾊﾟｰｼﾖｰﾄ 1.90m) ARM (SUPER SHORT 1.90m) (OPTION) B05 837-42800010 ｱｰﾑ( ﾎｷﾖｳ) ARM(WITH PLATE) (STIFFENER PLATE:LONG) (OPTION) B06 837-42900011 ｱｰﾑ( ﾎｷﾖｳ) ARM(WITH PLATE) (STIFFENER PLATE) (OPTION) [937B004]