The Thermo Cell technology requires that you produce body heat

Not intended for extended highway use

Superior anti-wear protection at extreme temperatures and loads

Stretch material in calf (less bulk inside boot)

universal hose and adapter

Wera Tools - 840/1 IMP DC Hex-Plus DIY Impaktor bits Model:840/1 IMP DC Hex-Plus SW 5,0 x 25 mm DIY-Box The Thermo Cell technology requiresHigh quality Impaktor bits for hexagon socket screws. The Impaktor technology offers an above average service life even under extreme circumstances. Enhanced friction resistance, thanks to the rough diamond particle coating on the bit tip, prevents any slipping out of the screw head. Hex Plus ensures a greater contact surface in the head of the screw. The notching effect is therefore reduced to a minimum and damage to the screw head more or less