Long reach - the deep sockets is 80mm long to reach more than 1.5cm to remove the nut, compared with the 60 mm nut drivers, it is handy for getting into small spaces, best for nut with extruding bolt. 12 popular sizes - the nut setter driver drill bits have a borad range, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm,17mm, 19mm long sockets, great addition to your toolbox, ideal power tools for men, electricians Well made - the deep nut driver is made of heat-treated chrome Vanadium(CR-V) steel, high hardness for high torque, very durable for long service life. You have no issues with twisted and snapped problem with imatenn bits. Handy nut removal tool - when you are unable to remove stubborn bolt with spanner and extension bar, please try our long nut driver set to use with your impact driver or 1/4 inch ratchet, it removers bolts and nuts so easy 1/4 inch hex shank - all impact driver bits have the same 1/4 hex connection, just directly put nut runner into the cordless drill, impact driver, 6.35mm drill chuck, electric screwdriver, manual screwdrivers., Manufacturer: imatenn