Abstract: A retainer for holding a plurality of tools (10), (16), (17), (18), comprising a retention layer (12) having opposed first and second sides and a planar, horizontally disposed top containing a plurality of openings (11) supported by a more rigid interlocking base layer (13). The retention layer (12) is configured for gradient depths. The base layer (13) has a diametrically configured upper surface permanently affixed to the lower portion of the retention layer (12) to provide a rigid planar base. The openings (11) are formed to accept a plurality of tool shapes particular to the individual retainer. Color contrast between the retention layer (12) and base layer (13) provides visual recognition of missing tools. The retention layer (12) has a smooth top surface to accept the permanent application of size markings (14) and other pertinent information including graphics which gives the retainer the ability to be custom designed.