Base Plate & D-Ring Kits These 3/16” thick baseplates strengthen a traps frame and have a D-ring for easy center swivel hookup. Prevents hard fighting animals or strong springs from bending a trap’s frame. Welding, bolting, or riveting required. Sold per dozen. BP-1 D-Ring Baseplate For #1 1/2 Montgomery, #1 1/2 Northwoods, #1 1/2 Victor, #1 1/2 Duke, #1.65 Bridger, and #1 3/4 Northwoods. BP-2 D-Ring BaseplateFor #2 Victor, #2 Bridger with 3/4" baseplates, #2 Duke, and #1.75 Victor Old Style.BP-3 D-Ring BaseplateFor #2 Montgomery, #2 Northwoods, #2 Bridger with 1" baseplates, and #5 Bridger. BP-4 D-Ring BaseplateFor #3 and #4 Coil spring traps. BP-5 D-Ring Baseplate For #2 Bridger, #2 Montgomery, and #2 Northwoods. BP-6 D-Ring Baseplate For #3 Montgomery, #3 Montana Special, #3 Sleepy Creek, and #4 Victor Double Long Spring.