... etc. 3. Design, Length & Color: according to customer reqeusts Tapered Button Bits: Tapered button bits with size 28mm, 30mm 32mm, 34mm, 36mm ... customer has special requests, we can make customerised bits.1. Tapered Degree according to customers' requests2. Surface design and bits design ... according to customersBellowing is the products pictures for customer reference: Tapered button bits