Side arms do bend naturally during use and are bent see picture. Center "push" screw slightly bent but works fine.

Had mixed success with this it pulled some stuck wheels fine and others the fit was to tight and had to remove the transaxle to use the puller. Also there are cases where a wheel is so rusted this will not do the job. Always use PB it helps a great deal.

Manufacturer has web site and youtube under Blizzardtools all one word.