Leader in Tool Room Specialty Products - Trinity Brand Industries tool room, stainless steel shim, feeler gage, thickness gage, stainless feeler gage, brass feeler gage, standard feeler gage sets, tool wrap, flat sheets, stainless pre-cut slotted shims, perfect punch and die sets, TBI, industrial markets Trinity Brand Industries is a leading supplier of tool room specialty products to the industrial market. We currently offer a full line of tool room products and the expertise to manufacture any non-stock items to meet your exact specifications.