Cylinder Protection Add to quote to select, and choose quantity on the quote form. Grid view List view 100 lb LP Acetylene Collar CLPCO1Add to cart Add to Quote Coarse Thread Cylinder Cap – 3 1/8″ x 7 Thread HPCAPCOARSE HP Course Cylinder Cap 3 1/8″ x 7 Thread Add to cart Add to Quote Cylinder Construction Collar CONSTCOLLAR 100LB Construction Collar Add to cart Add to Quote Fine Thread Cylinder Cap – 3 1/8″ x 11 Thread CAP-HPF-SC HP Fine Cylinder Cap 3 1/8″ x 11 Thread Add to cart Add to Quote Threaded Collar with Cap TCCAdd to cart Add to Quote