tender for hss parallel shank drill bit (high cobalt) m42, as per is 5101:1991,size- 3.7 mm(d), optimum drill bit tip -type a/d,optimum flute angle- type n, use- drilling operationon stainless steel,make- bosch/addison/hittco/miranda. note:-to be purchased fromoem or the authorised dealers of oems .