supply of high speed steel twist drill parallelhigh speed steel twist drill parallel,high speed steel twist drill parallel shank jobber series 4.2 mm dia & to specn is: 5101/91 (reaffirmed 2001) and is: 5099/2003 [ warranty period: 30 months after the date of delive ry ] ] , drill bit of size-10 mm, hss grade m35 for drilling on various stainless steel an d ms sheets, parallel shank (jobber series) type n to specn is 5101/2018 & is 5099/2018 and che mical composition of xt90w6como5cr4v2 to table 1 of is 7291-2019 or latest [ warranty perio d: 30 months after the date of delivery ] ] , drill bit of size-8 mm, hss grade m35 for drilling on various stainless steel and ms sheets, parallel shank (jobber series) type n to specn is 5101/2018 & is 5099/2018 and chemi cal composition of xt90w6como5cr4v2 to table 1 of is 7291-2019 or latest [ warranty period: 30 months after the date of delivery ] ] , hss parallel shank drill bit (high cobalt) m35 as per is 5101:1991 size- 6.0 mm (d) optimum drill bit tip -type a/d optimum flute angle- type n use- drilling operation on stainles s steel [ warranty period: 30 months after the date of delivery ] ]