The small head size and head and knee angles of 100 and 18 degrees respectively, that are improved features of the KaVo EXPERTorque drill, translate into both improved ease of accessibility and greater efficiency of operation. One of the nicer features of the EXPERTorque is its management of water and air spray. While the turbine is slowing down, the unit's anti-reflux system reduces or eliminates safety and hygienic problems that can result from splashing.