<b>M35 COBALT HSS DRILL BIT SET SIZE INCLUDED:</b><br> 29pcs Drill Bit Set：1/16" 5/64" 3/32" 7/64" 1/8" 9/64" 5/32" 11/64" 3/16" 13/64" 7/32" 15/64" 1/4" <br> 17/64 9/32" 19/64" 5/16" 21/64" 11/32" 23/64" 3/8" 25/64" 13/32" 27/64" 7/16" 29/64" 15/32" 31/64" 1/2"<br><br> <b>PRODUCT FEATURE:</b><br> M35 COBALT HSS Material<br> 135 Degree Angle Point<br> Straight Round Shank<br><br> <b>APPLICATION:</b><br> M35 cobalt hss drill bit set are especially good at cutting hard metals such as stainless steel,<br> cast iron, superalloy, titanium alloy, hard plastic and wood. It can also be used in soft materials.<br><br> <b>PRECAUTIONS:</b><br> Make sure to put on masks and gloves before drilling.<br> Keep cool or discontinuous use will largely prolong drill life.<br> Keep the drill bits vertical to the object when drilling<br> Be sure to make both bit and work piece stable. Tilted bit is prone to break<br><br> <b>Please contact us at the first time if you have any question about our product , we are happy to help you.☺</b><br>