Brady Safety Padlocks are the ultimate locks for all of your safety and security needs! 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 non-conductive, non-sparking body features a ribbed design for easier gripping and handling. 1 key supplied with each lock. Key retaining (Key won’t release until the padlock shackle is securely closed). These padlocks have the added advantage of being fully electrical resistant. The plastic shackle cuts off the electrical current from the shackle to the key.