Cap

The second tool is a copper stamp called a cap. This creates “monogram’ like patterns to the fabric.

"In the same year, UNESCO also recognized "Education and training in Indonesian Batik intangible cultural heritage for elementary, junior, senior, vocational school and polytechnic students, in collaboration with the Batik Museum in Pekalongan" as Masterpiece of Oral and Intangible Heritage of Humanity in Register of Good Safeguarding Practices List.” - Wikipedia