GDI 12:1 Ratio Chilton Caulking Gun has the smooth operation of a friction rod, plus a large handle and trigger. Perfect for dispensing low to medium viscosity materials. Strap frame rotates to move nozzle tip where needed. The spring release plunger lets you load and dispense quickly and easily and releases pressure on the plunger to prevent sealant run-on. A special feature of this gun is the Wear Compensating Device that minimizes wear on the applicator by automatically taking up the slack to provide total trigger action from first use to last. This device will approximately double the life of the gun. Also features: die cast zinc alloy body; all component replaceable parts; patented catch plate (sintered steel) and built in ladder hook. Holds all standard size caulking cartridges.

Heavy Duty Strap Frame Gun with Smooth Rod

Our Most Popular Model

Holds Standard Caulking Cartridges

Caulking Gun Ratios-What does it mean? Extra Thrust!
Today's high viscosity sealants have brought about a new age of caulking guns. The question is, what does the term "ratio" really mean? Quite simply, for every pound of pressure being applied by the user, the ratio is a multiplier of pounds of pressure being exerted on the cartridge plunger. For example, the GDI 12 to 1 Ratio Caulking Gun would provide 12 times the amount of each pound of pressure being applied.