Bosch Hedge Trimmer GHE18V 60 2N 18V Brushless 24 Inch Dual Action Bare Tool (2800 SPM Anti Blocking 3 4 In Branch Cut Laser Cut Diamond Blades) Dovetail Bit 4 mm) Dust Extraction Standard 4 mm) Dust Extraction Standard OSHA Table 1 Silica Compliant (GDE18V 26D with HEPA Filter) Included Battery Configurations (1) 8 this knife holds five standard straight utility blades on one side of its magazine and five hook blades on the other for rapid switching between general cutting and specialty roofing tasks integrated Anti Blocking stall prevention technology Anti Blocking Technology: Electronic micro control senses wood resistance on branches up to 3 4 inch thick and automatically cycles the blade stroke to eliminate stalls and jams