Designed for 2-1/2 diameter Spray Cans and 2" Tubes - accommodates 4 Spray Cans and 3 Caulk Sealant Tubes Spray Can & Caulk Sealant Tube Holder provides easy access for your Sprays and Caulk and Other Sealing Supply. Great tool for your vehicle's shelving and also can be mounted anywhere in a shop or garage for easy access. 16 gauge steel, grey powder coat finish.