THIS IS A GENUINE KAVO 31 LR,  PROPHY SCREW IN HEAD, IN GOOD CONDITION,(photos are generic) USES SCREW IN PROPHY ATTACHMENTS, AND PUSH ON WITH SCREW ADAPTER, WILL WORK ON KAVO CONTRA ANGLES, 2307 HANDPIECES,AND 182 MOTORS, AND 2307L OR 2307 LN HANDPIECES, NEW RETAILS OVER  $500.00, GOOD DEAL, 90 DAY WARRANTY, SAME DAY SERVICE ON REPAIRS.