Quick view ADC AD360 Window Punch ADC MSRP: Now: $9.85 Was: 40% more punching power (minimum 26 lbs). Specially hardened replaceable steel tip tempered to a Rockwell hardness of C60 resists dulling. Jam proof modified ball bearing operation. Force is adjustable by twisting rear cap for precise control... MSRP: Now: $9.85 Was: Quick view