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STEP DRILL BIT SET:drill bit set includes 5 standard step drill bits, you can process 50 different kinds of diameter holes with the 5 Pcs.enough for your DIY needs.
HSS BITS FOR METAL:High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, run more smoothly.
DRILL BIT WIDELY APPLICATION:step drill bits can be used to chamfer, bur, and drill or enlarge holes. The step drill bits can work with stainless steel sheet, aluminum alloy, plastic material and wood.
DRILL BIT SET:Step drill is packaged in a portable custom plastic box, which is easy to carry and store, and the transparent window design makes it easy to find when in use.
AFTER SALES OF DRILL BITS:If you have any questions when using the ENBMEI step drill set, please contact us and we will respond to your message within 12 hours.
Step Drill Bit Set Size Details:6 steps: 3/16" to 1/2", (3/16", 1/4", 5/16", 3/8", 7/16", 1/2")9 steps: 1/4" to 3/4", (1/4'', 5/16'', 3/8'', 7/16'', 1/2'', 9/16'' , 5/8", 11/16", 3/4")10 steps: 1/4" to 1-3/8", (1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 -1/8", 1-1/4", 1-3/8")12 steps: 3/16" to 7/8", (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")13 steps: 1/8" to 1/2", (1/8", 15/32", 7/16", 15/32", 1/4", 9/32", 5/16", 11 / 32", 3/8", 13/32", 7/16", 15/32", 1/2")