●Set in the bolt with an original setting technology of a butterfly part which uses the heading butterfly nut technology.●Guaranteed torque conforms to JIS and it has sufficient strength as a screw to be tightened by hand.●Nominal Diameter (d x L):M8 x 12●Blade Width D (mm):36●Blade Height H (mm):19.1●Soft Steel Wire Rod(SWRM8 to 10R)●Surface Treatment: Unichrome Plated Finishing
