Husqvarna Breaking Bar with Cant Hook Front & Zero turn mowers pruning or perfecting topiary Catching Kit:53 cm 21" pruning or perfecting topiary 2 kg Blowing force 8 N 1) Max air speed 56 m s 2) Max air speed 61 m s 3) Air throughput with round nozzle 558 m3 h Air throughput with flat nozzle 490 m3 h Sound pressure level 81 dB(A) 4) Sound power level 94 dB(A) 4) Working time with AK 10 battery to 12 min 5) Working time with AK 20 battery to 25 min 5) Working time with AK 30 battery to 30 min 5) Cordless power system AK Collection bag volume 40 l Airflow rate 496 m3 h Vibration level left 0 Fully forged with plastic handle repeat heel and turning hook