Dayton Stud Driver. Power-Automated High-Velocity .22 caliber 1/4" bore Stud Driver Model 4X722 with bore cleaning tool and cartridge extractor. All in steel carrying case Includes the following Pins & Power Loads (403 Total) Qty. Pins 91 Drive Pins 1/4” x 2-1/8 88 Drive Pins 1/4” x 1-5/8 Power Loads 53 Green/Light 4x718 105 Yellow/Medium 4x719 91 Red/Heavy 87 Purple/Extra Heavy Disks 80 7/8” NOTE: Please give me your Name and Phone Number and the best time to call in your email. I will call you to answer any questions you might have. I WILL NOT respond to inquires without this information. Thank You.