Features: Trigger actuation with stronger middle finger Finger rests on the side of tool do not protrude Anatomic design keeps wrist and arm straight, allows high feed forces Line of force in line with chuck for better control Teasing trigger for good speed control Grease zerk adds grease directly to the gears 3 Planetary system to reduce gear train length and increase durability Tipper valve and valve seat is easily accessible for service Slip fit of front end plate bearing allows easy service of the air motor without disturbing the rotor spacing Drop in motor. No alilgnment necessary (applies to non-reversing drills only) Rotor pinion is case hardened to resist wear Grease zerk makes it easy to grease the gears without disassembly Planetary reduction can be serviced without removing the chuck Planet gear pins are slip fit for ease of assembly and disassembly Ring gear is machined into the motor retainer for ease of assembly and disassembly Interchangeable rotor, cylinder, bearings and endplates. This reduces the number of spare parts tool cribs need to stock