Product details:

Minimum Spread, 4.625 in. Maximum Spread, Each - These versatile OTC accessories feature "knife-like" edges, which are easily placed behind the part to secure a gripping surface, even when clearances are extremely limited. When used with an OTC Grip-O-Matic puller, the puller jaws grip the attachment's outer edge; when used with a push-puller, the puller legs are threaded into the attachment's two tapped holes. They come available in multiple spreads.