1/4 Inch Hex Shank Quick Release Screwdriver Magnetic Drill Bit Holder with Adjustable Collar Extension Bar 60/100/150mm TMP1105

DescriptionMaterial: CR-V Stainless Steel Shank: 1/4" hex shank (6.35mm) Length: 60mm/100mm/150mm They are made of chrome vanadium steel (CR-V) and heat treated to provide maximum strength and wear resistance. Screwdriver Bit Holder with Magnetic Tip - Lock-n-Load Quich Change and Release.