1 x 3/4″D x 1/2″D Impact Adaptor and 1 x 3/4″D Impact Coupler (Lock). 1 x 3/4″D x 200mm Impact Extension Bar. Contents: 9 x 3/4″D Bits: Hex 14mm, 17mm, 19mm, 21mm, 22mm and Star T70, T80, T90, T100.