Harbor Freight 3-in-1 Framing Nailer | The Framing Nailer- what is a 3 in 1 framing nailer ,9/8/2014· For a highly versatile nailer that shoot multiple times of nails at 3 different angle, the 3-in-1 framing nailer from Harbor Freight Tools does the job. This nailer includes an adjustable magazine that allows user to shoot 2 - 3.5 inch clipped or full head nails. Collated atHow To Use a Framing Nailer: The 5 Easy Steps Explained25/4/2021· Frequently Asked Questions Question #1. Can I use a finish nailer for framing? Answer: Yes, and it will be best if you choose a decent finish nailer for framing. Question #2. What size nails to use for 2×4 framing? Answer: 3-1/2 inches long nails are best for framing. 3-1/2 inches long nails are best for framing.