옵션선택(날직경) 옵션 선택 818.564.11(7.5도/6.35mm) 818.580.11(9도/8mm) 818.596.11(9도/9.5mm) 818.628.11(14도/12.7mm) 818.658.11(7도/15.8mm) 818.674.11(8도/7.4mm) 818.690.11(7도/19mm) 818.706.11(8도/20.6mm)