Unique Bargains 10 Pcs 1mm Dia HSS Twist Drill Bit w Plastic Cylindric BoxCategory: 1mm BoxHSS twist drill bit with straight shank, sharp spiral groove. Used widely to drill the metal and marble, is easy to install. The twist drill bit is used with electrical drilling machine.(here is not included). For CALIFORNIA residents only: WARNING: This product contains chemicals including DEHP, which is known to the State of California to cause cancer and birth defects or other reproductive harm.Please note that by posting this Proposition 65 warning, we are notifying you that one or more of the Proposition 65 listed chemicals may be present in a product. With Unique Bargains' products, the exposure to these chemicals may be of no significant risk to you, but out of caution, we have elected to place this warning on our site to make sure our customers are informed.You can find more infomation at http://www.oehha.ca.gov/proposition-65/about-proposition-65.