Uxcell 42pcs Screwdriver Bit Set 1/4 Hex Shank CRV Screw Driver Kit Tools with 300mm Flexible Extension Bit Shaft

-CRV carbon steel this batch of head using CRV carbon steel batch head surface for steel material color from inside to outside are the same. -Exquisite workmanship each edge can be accurately locked screws and the screwdriver head. -Professional tool to reach tight corners. -Widely used for manual electric screwdriver screwdriver drill air and other tools ect. -Professional multi size hexagonal handle on the edge of 1/4 inch.