The 0350 is a larger knife than the TR3. It is wider, thicker, and heavier at 5.6 ounces vs 3.8 ounces for the TR3. The oal of the TR3 is longer than the 0350 at 8.2" vs 7.9". I have a TR3 stainless version and a ZT0350, but no pics. The ZT0350 is a nice handfull of knife, and at 5.6 ounces, it is very solid feeling. If you go with the 0350, check out the CB version with an Elmax edge.
Here are the specs for the ZT0350
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In response to customer requests, ZT is proud to introduce the 0350. It’s slightly smaller and slightly lighter than the 0300—10% to be precise—but just as aggressive. The 0350 is fully equipped with SpeedSafe for one-handed assisted opening. Even in combat gloves, you can easily deploy the blade using the large, ambidextrous thumb stud or blade protrusion. The composite blade is composed of 14C28N and premium ELMAX steel edge for superior sharpness and edge retention. Textured, matte-black G-10 scales provide a secure grip. Includes a quad mounting system for tip-up, tip-down, left- or right-handed clip carry.
Features
•SpeedSafe
•Locking Liner
•Quad Mounting System
•MOLLE compatible
Specifications
•Steel: Composite; Sandvik 14C28N; Cutting Edge: El-Max, *High chromium-vanadium-molybdenum alloyed steel. Highly corrosion resistant with outstanding edge retention.
•Handle: Textured black G-10
•Blade Length: 3-1/4 in. (8.25 cm)
•Closed Length: 4-5/8 in. (11.75 cm)
•Overall Length: 7-7/8 in. (20.002 cm)
•Blade Thickness: 0.121 in.
•Weight: 5.6 oz.
•Made in USA
Here are the TR3 specs
Specifications:
Blade: 3.55"
Overall: 8.2"
Weight: 3.8oz