Gudgeon recommended for small boats to 20'. Bushing reduces friction. Compatible Pintles: Works with Schaefers 80-45, 80-46, 80-55 and 80-56Pin Diameter: 1/2"Strap Thickness: 1/8"Strap Length: 3 3/4"Strap Width: 1"Weight: 3oz.Fasteners: Four 1/4" RHMS