Product details : "BAHCO 7809M-4 4MM X 1/2"" SOCKET FOR HEX HEAD SCREWS"
Screwdriver socket wrenches 1/2" , for Allen key bolts. Metric Not suitable for mechanical work. High-alloy quality steel. Polished high-gloss. Toothed. ISO 1174. DIN 3120. SB = individually packed in plastic suspension informative card.
Strengths
Knurled shank for finger turning of free running fasteners|Not suitable for use with power tools