The Autojack SAS8 8 Piece Impact Socket Adapter Set is manufactured from drop forged chrome vanadium steel with black phosphate finish for added corrosion protection, laser etched for visibility and supplied in a robust storage case. 1/4(F) x 3/8(M) 3/8(F) x 1/4(M) 3/8(F) x 1/2(M) 1/2(F) x 3/8(M) 1/2(F) x 3/4(M) 3/4(F) x 1/2(M) 3/4(F) x 1(M) 1(F) x 3/4(M) Weight: 1.3kg Dimensions: 5.9 x 21.8 x 14.4cm Autojack 8 Piece Impact Socket Adaptor Set 1/4", 1/2" & 3/4" in Black