CUTS IN HARD TO REACH AREAS - Allows access to difficult to reach areas such as underneath trunk lids, hoods and visors EASILY CHANGE DIRECTIONS - You can easily change the cutting direction from pulling to pushing without having to remove the blade from underneath the glass REPLACING BLADES IS EASY! - No tools are required for removing and replacing the blades Equalizer Z Blade Variety Pack (Z1, Z2, Z7, Z3, Z4, Z5, Z8, Z9 & Z6) VZB10 Z Blades will remain flexible and retain their sharpness much longer than the average cold knife blade. The grinding of the blade is at a greater angle than other cold knife blades. Resists breaking, lasts longer and keep a sharp edge. No need to grind blade, blade is already thinned before hardening. BLADE SETS INCLUDE Standard Z Blades - Z1, Z2, Z3, Z7 and Z9 Coined Z blades - Z4, Z5, Z6 and Z8