±æÀÌ ¹× Æ÷Àå´ÜÀ§ ¿É¼Ç ¼±Åà 3/8(9.5mm)/50°³ 1/2(12.7mm)/50°³ 5/8(15.8mm)/50°³ 3/4(19mm)/50°³ 1inch(25.4mm)/50°³ 1-1/4(31.7mm)/25°³ 1-1/2(38.1mm)/25°³