Minimum spread of 5/8 and maximum spread of 8. Use with puller Nos. 1047, 1043 and 939. Weight is only 19 lbs. 12 oz. 1 - 14 thread of tapped hole in adapter. 7-1/8 distance between adjusting screws These versatile 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, puller jaws grip attachment's outer edge; when used with a Push-Puller, puller legs are threaded into the attachment's two tapped holes.