The blade is what actually makes a scraper worth its weight in gold. A good blade is a precision made, ultra-sharp and very thin piece of metal. If the edge of the blade is not perfectly smooth it will not function properly. Looking straight down the blade when installed in the tool should reveal a perfectly smooth blade. The blades are commonly available in stainless steel.
Replacement blades for TRIUMPH are all packed in a safe blade dispenser with room for worn-out blades - so no used blades are left lying around. It safely distributes one blade at a time, and also holds used blades in a safe chamber. All stainless steel blades are packed in black dispensers.
How to Scrape
Only scrape on wet glass. Adding soap helps even more,
Only push a scraper. Never pull it back,
Apply even pressure holding the blade flat against the glass,
Approach edges slowly to avoid cutting caulk or damaging frames