2-7/8"x6" (73mmx152mm) polished steel edger with soft-grip handle and sturdy steel mounting Curved edges prevent gouging.
✕CHOOSE A DIFFERENT TOOL WHEN
Mortar joints on walls. The line's standing confusable pair: the jointer's half-round compresses mortar joints in a stiffening wall (18170; wider class 18182 ); this quarter-round rounds the rim of a fresh slab. If the material came off a mortar board, jointer; if it arrived in a ready-mix truck, this. They hang inches apart and share nothing but polish.
Control joints. Grooving the field is a groover's job — a tool this line honestly does not carry.
Hardened concrete. Plastic material only; cured corners belong to abrasives.
The field itself. Six inches of edger makes a terrible trowel; closing and burnishing the surface is the 18000's fourteen inches (and, class-grain only , the 18520's twelve).
Drywall, plaster, tile. Nothing about a quarter-round lip serves a flat trade.
Every edging fault traces to the window: tearing and aggregate roll-out mean too early; chatter and surface burnish with no compression mean too late. The thumb rule is the slab's own footprint test — bare quarter-inch boot print, then steel. Ride the form. The vertical lip against the form face is the tool's fence; let it steer and the radius stays parallel to the rim the whole run. Rock, don't plow. Leading edge up a few degrees into each stroke; the upturned ends exist so nothing digs. Feed hunger, don't chase it. Open spots get a dab of mortar and a re-pass, not a deeper cut. Overlap by half. Each stroke laps half the last; laps vanish, gaps don't. Keep it polished. The mirror face is the finish: rinse before paste cures on it, dry it, and store it dry — polished steel over a steel mounting asks only that; dried concrete on the sole prints drag lines into every rim after.
Asked before buying
BUYER QUESTIONS, ANSWERED BEFORE YOU ORDER
What does the 1/2" in the name mean?
No Hyde source says. Standard edger nomenclature reads it as the quarter-round's radius, and this store says "1/2\"-radius class" only with that flag attached .
When do I edge?
After the bleed-water sheen evaporates and a boot prints a bare quarter inch — first steel on the slab, then again after every troweling pass. Timing is the entire craft; §2a and §3 carry it.
Why did my slab's edge chip anyway?
Usually one of three: edged over bleed water (weak skin), never re-edged after troweling (radius flattened back to a near-corner), or no control joints (cracking chose its own lines). The workflow in §2b is the fix, next pour.
Can I round over my existing sidewalk's corners with it?
No — plastic concrete only. Hardened arrises are grinder work.
Is it the same as a brick jointer?
No, and buying across that confusion is common enough that both guides carry the pair: quarter-round for a fresh slab's rim here, half-round for a wall's mortar joints there.
What does "MAXXGRIP PRO" in the title mean?
Nothing official — no Hyde source defines a PRO tier; the flag rides the title until it's reconciled .
Care?
Rinse before the paste cures, dry, store dry. A polished sole is the tool; dried concrete on it is a new texture for your next slab's rim.