Mace Brand Police Strength Pepper Spray Pen Defender Mace Pepper Spray in a convenient to carry and easy to use pen. The Mace Pen Defender is a working high-quality ballpoint pen that you can carry in a shirt pocket or purse. The Pen Defender contains a powerful 10% Pepper formula that stops attackers. To fire simply remove the safety cap from the top of the pen to reveal the defense spray unit. This item is not for sale in certain states