Not for the 19425/19423 offset floor scrapers — that is the 19453's job, different parent, different verb, and the corpus carries an unresolved identity flag on those parents that this page has no need to enter.
Not for the powered Regrout Tool — the 19502 exists.
Not a hand tool bare: a grout blade without its handle is knuckles in a joint line.
Not for epoxy grout, on any blade, fresh or spent — thermoset resin defeats hand abrasion by design, and the boundary belongs to every page in this trio.
And not a substitute for technique: a fresh blade pressed hard wanders exactly like a dead one — the swap buys back pace, not permission.
The store title says grout-saw blades and the line pairs them with the 19402; exact model-pairing wording awaits verification . No other hand tool in this store is a candidate parent.
How many come in a pack?
Retail listings say two — unverified, so the card in your hand outranks this page.
Can I sharpen a slowing blade?
No. Grit wears; it was never an edge. The maintenance schedule is: recognize the tells (pace, pressure creep, wander), swap, keep cutting.
Are these the same as the 19453 blades in this aisle?
No, and the error runs both directions — different parents, different trades. Section 5 is the two-minute read that prevents the return shipment.
How many joints does one blade last?
Honestly unanswerable from this record — consumption scales with joint-feet, depth, and grout hardness. The planning rule stands in for the number: pack in the cart for anything bigger than a tub surround.
When in a job should I swap?
On the tells, and before the finishing passes near visible arrises — run blade life backward from the delicate work. A fresh blade is arris insurance; arrises are the one thing a regrout can't repair.
Why does a slowing saw chip tile?
Because dead grit invites pressure, pressure invites wander, and wander ends at a glaze edge. The blade pack is the safety mechanism as much as the speed mechanism.
