7 Pack Ceramic Quartz Crucibles with Pointed Tweezers,Crucibles Crucibles Melting Dishes Ceramic Casting Torch Melt Jewelry Gold Silver 100/150/250/400g/500g

Specifications:

Capacity:100,150, 250g, 400g,500g
Material: Quartz Silica

Five size as bellow:

Crucible Bowl(100g):
Outer Diameter: 52 mm;
Inner diameter: 45mm;
Height: 21mm;
Net weight:approx 30g

Crucible Bowl(150g):
Outer Diameter: 60 mm;
Inner diameter: 47mm;
Height: 25mm;
Net weight:approx 36g

Crucible Bowl(250g):
Outer Diameter: 70 mm;
Inner diameter: 60mm;
Height:25mm;
Net weight:approx. 52g

Crucible Bowl(400g):
Outer Diameter 75 mm;
Inner diameter: 65mm;
Height: 32 mm;
Net weight: approx. 80g

Crucible Bowl(500g):
Outer Diameter: 83 mm;
Inner diameter: 70 mm;
Height: 36 mm;
Net weight: approx. 94g

Unit conversion: 1mm = 0.0393inch

Package included:
5 X Quartz Silica Melting Crucible
2 X Tweezers

Note:
Before the gold and silver melt, borax should be placed at the bottom of the bowl to prevent the gold and silver from melting and sticking to the bottom. The melting bowl is easy to absorb moisture, and it is preheated and gradually heated before use to prevent water from chilling and bursting.