Optimise your welding safety comfort coverage and control the new speedglas tm 9100 welding helmet features an all new head suspension that profiles your unique head shape for a secure stable fit more coverage 3m speedglas have made the 9100 helmet deeper and wider providing greater coverage of the ears neck and sides of the head more comfort professional welders marvel at the stability and balance of the shield as a result of its lower pivot point the new head suspension also better c