CRL 1/2" x 1-1/8" x 4" Silicone Rubber Setting Blocks Caulking & Urethane Heaters/Coolers The ratchet rod pushes caulking

The ratchet rod pushes caulking material smoothly while being easy on your hands with its patented Gator Trigger® Comfort Grip

Low Pressure and Minimal Expansion Sealing Foam

Tests Single or Double Panes

Includes one 1/2" (13 mm) round metal nozzle

Known for its long wheel life

CRL 1/2" x 1-1/8" x 4" Silicone Rubber Setting Blocks Caulking & Urethane Heaters/Coolers The ratchet rod pushes caulkingCompatible with, and Will Not Discolor, Most Silicone Sealants Can Be Used for Food and Computer Related Applications 80 Durometer Hardness These CRL Silicone Rubber Setting Blocks have superior durability, are U. V. resistant, and are compatible with most silicone sealants. They will not discolor the silicone should the two come in contact with each other. Job specific testing prior to start up is recommended with each silicone sealant manufacturer.