The universal 18mm size is compatible with most 18mm handles

Ultra-lightweight caulking gun reduces fatigue from extended use

and is safe for grass

The Mount can be secured onto many surfaces such as boats

Fits Waist Sizes 29" - 46"

Simpson Strong-Tie General-Purpose Tool Combination The universal 18mm size isThe PT 27 is a semi automatic and fast cycling fastening tool that is engineered for continuous use, high reliability and low maintenance. This versatile tool fires a variety of fastener types and lengths. Applications Wood Residential Construction Fastening to Structural Steel Direct Fastening Cold Formed Steel Drywall Track Mechanical Electrical Plumbing Concrete Ceiling Wire Fastening Specifications Fastener Length: 1 2" 2 1 2" (3" washered)