The documented job is “How to Prep a Deck for Refinishing — The Complete Step-by-Step Guide”.
✕DO NOT FORCE THE FIT
Overhead ceilings and raked-back reach. A straight blade on a steeply raked pole skates instead of biting — the bent 12070 is the overhead tool. The 12072's line is straight down, not up-and-back.
Prying with the pole, or striking. The pole multiplies leverage; do not lever or pry with it, and never strike a chisel scraper. Prying is the 45600's trade; striking is the hammer scrapers'.
Rabbets and profiles. A 3-inch chisel on a pole is a broad-flat driver, not a channel or molding tool.
Filling and finishing. No apply role — that is the flexible putty knives.
The straight blade rewards a vertical line of force — get your shoulder over the pole and let your weight, not your arms, do the work on decks and floors. Direction: push; short heavy strokes on the stubborn bonded spots, longer strokes on the clearing flats. Two hands on the pole, and keep the pole from over-extending past the length you can control. Edge care: high-carbon steel, fixed and filed — the XHD blade still needs a mill file to keep the chisel edge square, and it will bloom rust if left wet, so wipe it dry. Match tool to angle: if you find yourself raking the pole back to reach up at a surface and the straight edge stops biting, that is the 12070's job, not this one.
Asked at the counter
BUYER QUESTIONS ANSWERED BEFORE THE CART, NOT AFTER THE RETURN
Straight 12072 or bent 12070?
Straight (this tool) for driving straight down onto decks and floors from standing; bent for biting ceilings, high walls, and gables from a raked pole.
What does "extra-heavy-duty" mean here?
A thicker, stiffer blade than the standard pole chisel, for bonded and weathered coatings driven from a distance.
Is a pole included?
No — it threads onto any Acme-standard extension pole, sold separately. It also works hand-held.
Can I scrape a whole floor with it?
For broad stand-up floor fields the dedicated 19200/19205 floor scrapers are purpose-built; use the 12072 for decks, bonded patches, and versatile hand-or-pole work.
Can I pry or hammer with it on the pole?
No — the pole is for reach, not leverage; pry with a 45600 and never strike a chisel scraper.