supply of kit of u type drill body , p.s, ( through coolant ) dia. -21 mm, drilling depth-3d, shank dia.25 mm, shank length -50-56, flute length 82-90 mm, and oal 130-140 mm , with compatible insert for make dia. 21mm, ( insert should be same for centre and periphery ) pvd coating, shank flat according to iso-9766: 2012 ( e ) .grade suitable for machining of steel material ( carbon steel casting to is:1030, 89 grade 230-450w ) i ) drill body -02 nos. ii ) insert -50 nos. iii ) insert screw- 25 nos iv ) screw driver - 02 nos [ warranty period: 30 months after the date of delivery ] => limited