supply of cordless air blower (battery operated) as per specification: 1. air speed: 270-280 km/h, 2. voltage: 18 v, 3. type.......... , cordless air blower (battery operated) as per specification: 1. air speed: 270-280 km/h, 2. voltage: 18 v, 3. type of product: cordless air blower (battery operated), including charger. 4. no load speed: 17000-18000 rpm, 5. b attery voltage: 18 v, 6. sound pressure level: 76-82 dba, 7. sound power level: 85-93 dba, 8. air flow rate: 120 cmh, 9. max air flow (m3/min): 120-125 m3/h. 10. amps: 4amps 11) the length of nozzle is 500 mm is required to clean confi ned places. and battery operating time minimum 30 minutes for continuous operation after full charge of battery. make: bosch or its equivalent. [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]