Patent ID: 8032994

Claim:
An apparatus for marking a material and mounting the apparatus on the material so as to fasten the material on to an object, the apparatus comprising: a) a first member removeably attachable to the object, said first member comprising a projection configured for marking and puncturing the material, said projection projecting from a first side of said first member and including at least one annular ridge in a plane generally perpendicular to the longitudinal axis of the projection; and b) a second member adapted to removeably secure the material to said first member, the second member including an aperture with an annular groove in a plane generally perpendicular to the longitudinal axis of the aperture, said aperture configured to receive said projection whereby said at least one annular ridge on the projection engages the annular groove on the aperture so as to detachably secure said second member onto said first member whereby said second member is detachable from said first member without causing damage to said annular groove or said at least one annular ridge to a level which prevents secure reattachment of the second member to said first member by reengagement of said annular groove with said at least one annular ridge.