Rubber blackjack

The Rubber blackjack is an item used to knock out the advanced pickpocketing trainers or coshing volunteers once the player has lured them. It is similar to any blackjack, except that it can only be used for training within the Thieves' Guild. It can be bought from Dodgy Derek in the Thieves' Guild for one coin after the blackjack part in The Feud and two capers have been completed. Alternatively, one may also be obtained by talking to the Advanced pickpocketing trainer.

Trivia

 * Although the blackjack is rubber it can knock out a large person, and does so for even longer than the highest quality wooden blackjack. It is possible that the villagers, bandits, and menaphite thugs (the regular blackjacks are used on) are more resistant to blackjacking, or that the volunteers are simply pretending to be knocked out.