Lister 249-17430 Safety Comb Screw

The part number Lister 249-17430 is a Safety Comb Screw (sometimes called a Knucklesaver Safety Comb Screw) used on Lister sheep-shearing handpieces. It is designed to secure the comb to the handpiece and includes safety notches that work with a knucklesaver screwdriver. It supersedes the older part number 249-10510 and fits various Lister handpieces, including Laser models and newer handpiece