These are the 135-7101, they have a small shoulder un the underside of the head for use with guide plates, or you will need to add a small countersink in the head to accommodate it if your not using guide plates. There are only 12 per set, just enough for our 6's. I would like to sell both sets together for $100. I would accommodate shipping if you buy both sets. If you want to buy just a single set I would ask you share the shipping cost.
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