We can offer hole saws for cutting holes on door.  A lot of manufactures of door lock in Euro & USA would like to source hole cutters from us.  We have our own brand and quality control department, and can offer OEM quality products with competitive price from China.  After nearly 13 years experience in this field of business, based on our strong and reliable services, our customers continuously become solid forever business relationship with us. Our products are exported to some door lock manufacture in other countries, such as USA, Korea......