supply of battery operated rail corebattery operated rail core,arrangement of battery operated rail core drill along with additional 17 mm tct rail core d rill, maximum core cutting capacity : 36 mm, rated speed: 250/450 rpm, battery type: li-on, battery voltag e: 50 volt, battery pack capacity: 4 ah, number of battery supplied: 2 nos, number of charger supplied: 1 no, special design pressurized internal spindle cooling to give maximum life of core cutter and to avoid he ating of the rail. time taken to drill one hole of 32 mm in 60 kg 90 uts rail section less than one minute. ti me taken to fix the machine on the rail, less than 2 minutes and to de-clamp less than 1 minute. 34 numbe r 32 mm diameter hole with full charge batteries (17 hole per battery) in 60 kg 90 uts rail section. 2 sets o f ohe rail drilling adapters for gauge 60, 52 provided along with machine. weight of machine with battery: 18.5 kg, make: eibenstock. bosch, kptl. [ warranty period: 30 months after the date of delivery ] ] => limited