50 Pack - Low Temperature PVC Shrink Rings for Speargun Bands (select size) Qty: 50pcs Material: Low temperature PVC shrink ring Color: Black Dimensions: Expanded Dia. 3/4in, Recovered Dia. 3/8in, Width 1/4in Recommended for: 1/2in - 5/8in speargun rubber Warning: Must be stored in a cool place. Extended exposure to high ambient temperatures will cause premature shrinkage. NOTE: THIS PRODUCT IS INTENDED TO COVER CONSTRICTOR CORD (sold seperately) AND WILL NOT CONSTRICT THE BAND RUBBER BY ITSELF.