EXTENDED BODIES ARE DESIGNED FOR DRILLING CLOSE TO A STRUCTURAL WEB THAT IS NOT ACCESSIBLE WITH A STUBBY SLK DRILL.BODIES ARE MADE OF THE HIGHEST QUALITY ALLOY STEEL, HEAT TREATED, GROUND AND TIAIN COATED.THE EXTENDED NECK OF THE DRILL BODY DOES NOT HAVE FLUTES THEREFORE IS EXTREMELY RIGID FOR A DRILL THAT IS SEVEN TIMES DIAMETER IN LENGTH. INTERNAL COOLANT FED. THE EXTENDED LENGTH FSLK BODY UTILIZES THE SAME IDFK INSERTS AS THE STUBBY SLK BODY.WRENCHES AND SPARE HARDWARE ARE FURNISHED WITH EVERY DRILL BODY.