Product Name: Dual screwdriver
◆ Arbor high quality CR-V chrome vanadium steel， high hardness， good toughness， wear resistance
◆ two kinds of head， used interchangeably.
◆ special heat treatment， with more hardness and torque.
◆ Arbor special treatment， novel and unique， rust resistance better.
◆ Arbor higher precision， and the screw tighter fit.
◆ color soft handle design， feel comfortable， effective non-slip.