Free Spin Pawl allows the shooter to rotate the Ruger cylinder either direction when the loading gate is open. Makes for faster reloading if the cylinder is over-indexed. A must-have for handgun hunters. Requires fitting by a qualified gunsmith. Instructions included. Notes:Compatible with Large Frame Ruger Single Actions (Pre-2005 Vaqueros, Blackhawks, & Bisley-style revolvers). Will not easily work on the 22 caliber or 32 caliber single six revolvers. Use product 125-218 for the 22 caliber single six and product 203-317 for the 32 caliber.