Gauge Ring Mandrel 11½”, U.S. Standard 1-15

Tapered Mandrel Dimensions: Large smooth: graduates from 13/64” to 1½” dia; 21/8” long. Small smooth: graduates from 3/8 to 1” dia; 31/32” long. Large stepped: includes six steps 1”, 7/8”, 3/4”, 5/8”, 1/2” & 3/8” dia; 31/32” long. Small stepped: includes six steps 5/8”, 9/16”, 1/2”, 7/16”, 3/8” & 5/16” dia; 3” long. Anvil Dimensions: 3½” x 3” x 3¾” (L x W x H)