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Expansion Chucking Reamers - Straight Flutes  E-mail this product to a friend previous | up | next  Straight Shank Taper Shank Expansion reamers are designed to slightly enlarge holes for proper fit. The expansion feature allows the reamer to be sharpened repeatedly, then adjusted to maintain the original size. Size Dec. Equiv. Flute Length Overall Length EDP No. Straight Shank Morse Taper No. Taper Shank 3/8 .3750 3/4 7 308888 1 308911 13/32 .4062 3/4 7 308889 1 308912 7/16 .4375 7/8 7 308890 1 308913 15/32 .4688 7/8 7 308891 1 308914 1/2 .5000 1 8 308892 1 308915 17/32 .5312 1 8 308893 1 308916 9/16 .5625 1-1/8 8 308894 1 308917 19/32 .5938 1-1/8 8 308895 1 308918 5/8 .6250 1-1/4 9 308896 1 308919 21/32 .6562 1-1/4 9 308897 2 308920 11/16 .6875 1-1/4 9 308898 2 308921 23/32 .7188 1-1/4 9 308899 2 308922 3/4 .7500 1-3/8 9-1/2 308900 2 308923 25/32 .7812 1-3/8 9-1/2 308901 2 308924 13/16 .8125 1-3/8 9-1/2 308902 2 308925 27/32 .8438 1-3/8 9-1/2 308903 2 308926 7/8 .8750 1-1/2 10 308904 2 308927 29/32 .9062 1-1/2 10 308905 2 308928 15/16 .9375 1-1/2 10 308906 3 308929 31/32 .9688 1-1/2 10 308907 3 308930 1 1.0000 1-5/8 10-1/2 308908 3 308931 1-1/32 1.0312 1-5/8 10-1/2 308909 3 308932 1-1/16 1.0625 1-5/8 10-1/2 308910 3 308933 1-1/8 1.1250 1-3/4 11 308934 3 308951 1-5/32 1.1562 1-5/8 10-1/2 308935 3 308952 1-3/16 1.1875 1-3/4 11 308936 3 308953 1-7/32 1.2188 1-3/4 11 308937 4 308954 1-1/4 1.2500 1-7/8 11-1/2 308938 4 308955 1-5/16 1.3125 1-7/8 11-1/2 308939 4 308956 1-3/8 1.3750 2 12 308940 4 308957 1-7/16 1.4375 2 12 308941 4 308958 1-1/2 1.5000 2-1/8 12-1/2 308942 4 308959 1-9/16 1.5625 2-1/8 12-1/2 308943 4 308960 1-5/8 1.6250 2-1/4 13 308944 4 308961 1-11/16 1.6875 2-1/4 13 308945 4 308962 1-3/4 1.7500 2-3/8 13-1/2 308946 5 308963 1-13/16 1.8125 2-3/8 13-1/2 308947 5 308964 1-7/8 1.8750 2-1/2 14 308948 5 308965 1-15/16 1.9375 2-1/2 14 308949 5 308966 2 2.0000 2-1/2 14 308950 5 308967 2-1/16 2.0125 2-3/4 14-1/2 — 5 308968 2-1/8 2.1250 2-3/4 14-1/2 — 5 308969 2-1/4 2.2500 2-3/4 14-1/2 — 5 308970 2-3/8 2.3750 2-3/4 15 — 5 308971 2-1/2 2.5000 3 15 — 5 308972 3 3.0000 3 16 — 5 308973 Maximum expansion to 1/2" - approximately .006, to 1" - approximately .010, to 1-1/2" - approximately .012.