Features:
They are manual head screwdriver
Applicable for installing in electric screwdriver, hand screwdriver, electric drill and other tools
High biting level reduces damage to the screw head , the head of screwdriver is magnetic
Adopts the CR-V manufacturing skill and overall high-frequency quenching, super hardness, high torque, long lifetime
Storied in upper and lower plastic case, provides different models to choose, easy to use and carry
Specifications:
Shank diameter: 1/4 inch
Tamperproof Torx: T8 / T10 / T15 / T20 / T25 / T27 / T30 / T35 / T40
Spanner Sizes: 4mm/ 6mm / 8mm / 10mm
Torx Bits: 6mm / 8mm / 10mm
Tri Wing Bits: 1mm / 2mm / 3mm / 4mm
Imperial Tamperproof Hex Bits: 5/64" / 3/32" / 7/64" / 1/8" / 9/64" / 5/32"
Metric Tamperproof Hex Bits: 2mm / 2.5mm / 3mm / 4mm / 5mm / 6mm
2.5" Magnetic Bit Holder
Case size: app.6.7cmx4.8cmx2.8cm/2.63''x1.88''x1.10''(LxWxH)

Included:
33 X Screwdriver