3/4 Deep length impact socket and 1semi-deep impact socket material:CR-MO Exceed DIN/ISO standard Number:SBF-307b and 310 1.type:3/4 deep length impact socket and 1 semi-deep impact socket2.length:80mm,90mm3.size:307b 1/2,9/16,5/8,11/16,3/4,13/16,7/8,15/16,1,1-1/16inch(90mm length) 310 36 mm,38mm,41mm(80mm length) 4.materail:CR-MO5.Surface:p648-523 black