[5件套裝] 寶塔鑽頭 三角柄直槽階梯鑽 擴孔器 階梯鑽 打孔鑽頭 多功能 開孔器 ZZ0300

材料：高速鋼 尺寸： a. 鑽頭：3/16" 至 1/2" 6 步，柄直徑：6mm (3/16'', 1/4'', 5/16", 3/8'', 7/16'', 1/2'') b. 鑽頭：1/8" 至 1/2" 13 步，柄直徑：6mm (1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/ 8', 13/32', 7/16'', 15/32"", 1/2'') c. 鑽頭 : 1/4"" to 3/4'' 9 Steps，柄直徑 : 9mm (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/ 4") d. 鑽頭 : 3/16" to 7/8" 12 Steps，刀柄直徑 : 9mm (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3 /4"、13/16"、7/8") e. 鑽頭：1/4" 到 1-3/8" 10 步，柄直徑：9mm (1/4'', 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1 / 8", 1- 1 / 4 ", 1-3 / 8")