◆ 尖端為圓珠狀凹槽，寶石鑲嵌專用。
◆ 規格： 0.25mm
全系列規格如下：
===================================================
630.1000 0.25mm 0#
630.101 0.30mm 1#
630.102 0.35mm 2#
630.103 0.40mm 3#
630.104 0.45mm 4#
630.105 0.50mm 5#
630.106 0.55mm 6#
630.107 0.60mm 7#
630.108 0.65mm 8#
630.109 0.70mm 9#
630.110 0.75mm 10#
630.111 0.80mm 11#
630.112 0.85mm 12#
630.113 0.90mm 13#
630.114 0.95mm 14#
630.115 1.00mm 15#
630.116 1.05mm 16#
630.117 1.10mm 17#
630.118 1.15mm 18#
630.119 1.20mm 19#
630.120 1.25mm 20#
630.121 1.30mm 21#
630.122 1.35mm 22#