5Pcs Ball End Hex Bits 1/4 Inch Hex Shank 75mm Magnetic 3mm Head Screwdriver Bit 66.1-56.1mm which can prevent the drill

which can prevent the drill from cracking and prolong its service life

Drill Hole Size: 50 x 150 mm /1

Rated Speed: 1R/Min

4 inch (L*Hex Side W)

Dimension:460mm x 12mm / 18-1/8 inch x 1/2 inch(L*D)

5Pcs Ball End Hex Bits 1/4 Inch Hex Shank 75mm Magnetic 3mm Head Screwdriver Bit 66.1-56.1mm which can prevent the drill* These Screwdriver Bits are with magnetic design. * This useful ball end hex screwdriver set, exquisite workmanship, each edge can be accurately locked screws, no damage to the screw, and the screwdriver head. * Great replacement for missing, bent or broken Ball End Hex screwdriver bits. * Those Ball End Hex Screwdriver Bits are made of S2 alloy steel, which is a commonly used material in hardware with high hardness. * Widely used for manual electric