base or platform section an attachment member 44 is arranged to pass up through the aperture 42 a fastening means in the form of a bolt 46 is arranged to pass through an aperture 48 in a front face of the wear member the bolt includes a thread that engages with an internal thread of an aperture 50 through the attachment member once the member is in place through the aperture 42 in the main body portion of the wear member with the wear member 24 positioned against the receiver 20 a tapered contact face 52 on the locating member 26 engages with a corresponding tapered contact face 54 on the receiver rotation of the bolt causes the attachment member 44 to move away from the locating member the attachment member has a tapered contact face 56 and to engage with a corresponding tapered contact face 58 on an inner surface of the receiver a distal end 60 of the bolt 46 can have a contact end 62 that is free to rotate relative to locating member of the wear member alternatively the fastening means e g bolt 46 may be a one piece component this contact end includes an impact head arranged to impinge against a rear.