This brass adaptor will renew from 80 to 90 percent of all orifices, enabling them to use a higher B.T.U. gas. Obsolete as well as modern appliance orifices can be renewed efficiently at a minimum cost. The MI100 Adaptor is the most essential item in the serviceman`s kit. Very often, the Adaptor saves the serviceman a trip back on the shop when he does not have the proper replacement. The existing cap or plug on the appliance can be quickly renewed on the job, saving time and money. Explanation of tools and how to install the MI100 Adaptor. First, remove the existing orifice from the appliance and insert it in the No. TL074 Anvil, where it is secured by the thumb screw. Next, rearm out the orifice, using the No. TL010 reamer in conjunction with No. TL061 Handpiece; always turn the reamer in one direction. This will provide the proper size hole for the Adaptor. Remove the orifice from the anvil. Insert Adaptor (which is tapered to allow for insertion) into the reamed hole. Place the orifice on the end of the anvil. Use No. TL063 Driving Tool and Strike with hammer to fully position Adaptor. This tool is designed so that it will not damage the orifice channel during insertion. On the end of the anvil is a small counter sunk hole located off-center; place head of Adaptor into this hole. With the orifice in this position, insert the No. TL062 Crimping tool and strike once or twice. This will flare the Adaptor and allow an uninterrupted flow of gas.