Brady Plastic Lockout/Tagout Padlock, Keyed Different, 1-3/4" Body Length, 1-1/2" Shackle Clearance, Red (Pack of 6) Unique cylinder is insulated to protect workers from shocks when key is inserted and is 6-pin precision-machined for more unique key cuts and better tamper resistance Reserved, paracentric keyway provides optimal security and the special design prohibits the key from being released until the padlock shackle is closed Locks are compact and lightweight and resist impact, temperature, chemicals and corrosion Their nonconductive, nonsparking body features a ribbed design for easier gripping and handling It is compact, lightweight, nonconductive body and keyway, most corrosion resistant, most spark resistant, most tamperproof