Length (L, L1):- 28 mm Diameter 1:- 9,5 mm Diameter 2:- 17,5 mm Depth of Head (a1, t):- 5,5 mm Screw Size:- M6 Drive Connector Square (Female):- 3/8 inch Packing Unit:- 5 Piece Weight:- 0.025 kg Tip Size TORX® (protrude):- E7 Drive Connector Square (Female) Nominal Size:- 10 mm Width Across Flat TORX:- 6,16mm