Honggong Electric Wrench Deep Socket Bit Set Strong Magnetic Tapping Electric Drill Hex Long Air Screwdriver 6-Piece Set

Comprehensive upgrade in anti-rust process

Grinding and blackening technique ensures long-lasting rust resistance

Fine grinding process provides waterproof and rustproof protection suitable for various working environments

Surface blackening forms an effective anti-rust layer on alloy steel

Demonstrated superior rust resistance compared to competitors (tested over multiple days up to 16 days)

Alloy steel with enhanced hardness compared to ordinary steel

Recessed hexagonal magnetic sleeve screwdriver head

High fit accuracy with recessed hex design for easier nut insertion and effortless operation

Alloy steel hardness (specific year not provided)

Ordinary steel hardness (specific year not provided)

Select socket size based on the hexagonal nut or screw size

Measure the flat-to-flat dimension of the hex nut or screw (e.g., 11.7mm corresponds to a 12mm socket)

Measurement method illustrated for sizes 80, 90, 100, 110 (units not specified)