Bosch Speed-X™ Rotary Hammer Bit ALM420 Fully enclosed drum: best protection

Fully enclosed drum: best protection and mess containment

It has the run-time a professional needs to stay productive

Drop Rating

Works with high-amp batteries – fully charges a spent CORE18V® 4 Ah battery in 51 minutes

Micrograin solid carbide – ensures consistently smooth finish cuts

Bosch Speed-X™ Rotary Hammer Bit ALM420 Fully enclosed drum: best protectionBosch brings constant innovation to concrete and masonry drilling. Bosch developed custom manufactured carbide and diffusion bonding technology to provide better performance and durability. Speed X delivers high performance in precision anchoring and drilling applications. Tungsten carbide tip provides superior wear resistance in tough applications Patented four cutter tip design that provides optimal performance Large flute volume for fast drilling,