Adjustable cheek rests for Excalibur Micro and Bulldog bows. Designed by Tyler Thompson and sold here for several years with rave reviews. Easy to install and adjust. THE fix for Excalibur's low cheek weld. Hardware is .250 in dia. and holes in stock are approx .242 in dia. so it does require an initial quick ream with a 1?4" drill bit. Works right or left. Awesome addition to your Excal bow.