Prema Small Round Tube Repair • Bulk • Use a Repair Unit at Least 1/2" (12 mm) Larger Than the Injury on Each Side • Install With Prema Ultra Fast Dry Vulcanizing Cement • Note: “Button-Hole" the Injury Prior to Repairing to Prevent the Injury From Continuing to Grow • Diameter: 1-3/4" • Qty / Box 160