Guangzhou OKMA Hardware & Tools Co., Ltd. [China]

screwdrive bits with thread 1.S2 material 2.M4,M5,M6 size 3.58-61 degree hardness

1.Item: Threaded driver bits(screwdriver bits,electric screwdriver bits)

2.Material :industrial grade S2 steel.

3.Size: Different size for ur choose

New thread driver bits