(1)material：import S2 alloysteel
（2）weight：0.45KG
（3）dimension：1/4"、5/16"、3/8"、3/16"、5/32"、1/8"、3/32"、5/64"、1/16"
feature：
（1）.Using import S2 alloy steel manufactured.Bulk heat treatment. Rigidity reach 57-59
（2）.T –ball head can removable in25 degree. Convenience for some limited space witch inclined inside.
（3）．Bronze color withmagnetic head.