1 3/4X1 3/4'' casting rings; Made of durable stainless steel. Use with Button Sprue base, item # 21.778 or Tree Sprue base, item # 21.825 for leak-proof seal.
2X2 1/2'' casting rings item# 21.68701; Made of durable stainless steel. Use with Button Sprue base, item # 21.779 or Tree Sprue base, item # 21.824 for leak-proof seal.
Casting Flask 3 x 2 1/2" item #21.693; Made of durable stainless steel. Use with Button Sprue base, item # 21.782 or Tree Sprue base, item # 21.827 for leak-proof seal.
3 1/2X2 1/2'' casting rings #21.696; Made of durable stainless steel. Use with Button Sprue base, item # 21.783 or Tree Sprue base, item # 21.828 for leak-proof seal.