A kit for preparing an intervertebral disc space for receiving an implant (100)includes a plurality of trials (152) having different sizes. Each trial (152)includes a body (154) insert ible into an intervertebral disc space, the body(154) having a leading end (162), a trailing end (164), a top surface (156) anda bottom surface (160), the top surface of the body having a first groove (176)formed therein. Each implant also includes a flange (166) secured to the trailingend (164) of the body (154), the flange (166) having a first channel (180) alignedwith the first groove (176), wherein each of the different sized trials has a differentflange thickness. The flange thickness controls advancement of a cutting toolsuch as a chisel (192) into the first groove at the top surface of the trial body,which controls the depth of the cut into vertebral bone.
