supply of battery operated rail core drill machinebattery operated rail core drill machine,supply of battery operated rail core drill machine (eibenstock make erd35-2-v50.4 b or sim ilar) as per rdso specification no. tm/sm/468 dated 31.03.2014 first revision, 2017 or latest. suitable cla mp for 52 kg and 60 kg rail to be supplied along with each machine. the suitable drill bit for sizes 7.2 mm ( solid drill), 13 mm (rail hss cutter), 14mm (rail hss cutter), 16mm (rail tct cutter), 22 mm (rail tct cu tter) to be included as standard accessory in each machine. accepted make eibenstock. [ warranty perio d: 30 months after the date of delivery ] ]