5) 1/4" Solid Carbide 100° Degree Countersinks Used, But Still Cut FineThese are 100° countersinks - Not 82° for SAE Flatheads, OR 90° for Metric FlatheadsGreat if you need to Countersink holes in hard or abrasive materialsThere are small flats on some of them, the length is about 1 3/4"-2" overall
5) 3/8" Solid Carbide Single Flute 100° Degree Countersinks Used, Still Cut FineThese are resharpened 100° countersinks - Not 82° for SAE Flatheads, OR 90° for Metric FlatheadsGreat if you need to Countersink holes in hard or abrasive materialsThere are small
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