| 摘要 |
A striking device for impacting an object including a head member and an actuating arm member attached to the head member. The arm member is provided with an elongated sleeve member having a channel therein adapted for slidable engagement over at least a portion of the arm member and adjusting means adapted in association with the sleeve member to releasably engage the arm member and secure the sleeve member at selected positions along the arm member to provide adjustment of the overall effective length of the arm member.
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