It has been off sale since May 12th, 2012.
The Skull Cracker was often criticized by many for its overpowered strength, since it can kill a player in 1-2 hit and some criticism for costing only 1 tickets, therefore it was very easy for a Non Builders Club user to buy it and use it on places that allows melee weapons, which gathered great popularity for this gear. However, it only had a 2-week rental for whose who didn't buy the gear early enough.
- If the player bought it early as this gear came out for 1 ticket, the player could keep it forever. Otherwise, it would have a 2-week rental and you wouldn't have had it past May 26th, 2012.