Londa clearly explains everything about clipping, trimming, notching and grading of seam allowances while sewing so that you truly understand the 'engineering' of these sewing tasks important to achieve professional results.
Links to Sewing Notions as shown in video:
Kai 5135 Scissors:
https://www.londas-sewing.com/product...

Point Turner SeamCreaser from Collins ;
https://www.londas-sewing.com/product...

Ball Point Bodkin
https://www.londas-sewing.com/product...