1. Made of material, solid and durable to use.
2. Used for jewelry casting, shaft seal, hole seal, dust seal, fixed seal, oil seal, water seal.
3. Portable and lightweight, easy to carry and store.
4. High temperature resistance and wear resistance.
5. Necessary items for jewelry makers.
Specification:
Material: rubber
Color: Black
Type: 3in, 4in, 5in (optional)
Package list:1 * Rubber Sprue Base