Mine lasted almost 30 years and were abused! Bought Channel lock brand as both Crescent and Craftsman is now China crap. BUY Channel Lock as they are 7 dollars more and not junk

will these cut a saltwater grade fishing hook?

Yes - in a heartbeat! These are 8 or 9" and if it just for cutting finishing hooks, a good 6" set will be perfect and easily stow-able in a tackle box.

Are these pliers spring loaded, aloowing them to open up completely without assistance? If so how strong is the spring? Will my hand get tired w/ use?

The pliers are a 1/3 Lighter Than Standard Pliers, Reduces Fatigue

Is this plier/snipper made in Taiwan (R.O.C.) or in China (mainland) ?

Mine are just marked Crescent with the part number PS5429C. The quality of the cutter is such I doubt it is from China. Mine keep getting stolen they are such good cutters. I use mine on copper and aluminum wire mostly.

Brand	Crescent
Model Number	PS5429C
Product Dimensions	19.3 x 15.24 x 3.02 cm; 230 g
Color	silver
Material	Chromium-Vanadium Steel
Are Batteries Included	No
Model Year	2019
Item Weight	230 g

Apex Tool Group PS5429C PRO Series Diagonal Compound Action Pliers by Apex Tool Group

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Description

Specifications

Common Questions