Driver extension bar non sparking ReferenceAlloySquare (C)Length (L)014305 BeCu 200 mmDriver extension bar Beryllium copper 200 mm 1/4 inch 200 mm 027105 AlBr 200 mmDriver extension bar Aluminium bronze 200 mm 1/4 inch 200 mm 014308 BeCu 75 mmDriver extension bar Beryllium copper 75 mm 3/8 inch 75 mm 027108 AlBr 75 mmDriver extension bar Aluminium bronze 75 mm 3/8 inch 75 mm 014309 BeCu 150 mmDriver extension bar Beryllium copper 150 mm 3/8 inch 150 mm 027109 AlBr 150 mmDriver extension bar Aluminium bronze 150 mm 3/8 inch 150 mm