This butt pad is easily installed onto the At-One™, Agility™, Spike Camp™, and Quest gunstocks using a 1/8" Allen Wrench. If you are installing this 1" butt pad on a Spike Camp™ gunstock, you will need to use the screws from your Boyds gunstock's 1/2" pad, not the supplied screws with this 1" butt pad accessory. They will be too short.