2618-9555 Features: -Rotary hammer bit. -SDS-max® series. -Features a tip that stays sharper longer and delivers more holes within ANSI specifications. -Shafts wear at a much slower rate than most others and can take more abuse because of technologically advanced conditioning process. Use: -Mandrels. Generic Dimensions: -9/16'' diameter. Dimensions: Overall Product Weight: -0.87 Pounds.