They are made of a solid hard plastic material. They so have air pockets inside the rings so do not think the rings are defective. They are designed
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2.5 inch 60mm Clear Acrylic fillable hangable plastic ornament balls for crafts are ?made of a heavy gauge clear plastic..The plastic acrylic fillable
2.5 inch 60mm Fillable Plastic Ornament Balls for Crafts 12 Pieces
White Plastic Hearts Background Cake Topper. 7 inch tall by 6.25 inches wide. 12 Pieces per package. Use these for DIY party favors to decorate for
7 Inch White Plastic Hearts Background Cake Topper 12 Pieces
4 inch Clear Plastic Acrylic Craft Rings 5/16 inch Thick 12 Pieces
7 Inch White Plastic Hearts Background Cake Topper 12 Pieces
Round Plastic Rings
5 Inch Clear Plastic Acrylic Craft Rings 5/16 Inch Thick 12 Pieces
Falken Design 12 in. x 48 in. x 3/16 in. Thick Acrylic Black Opaque Sheet POQEL4GR
Plastic Rings Crafts
These 3 inch diameter white acrylic plastic craft rings come 12 pieces per package. They are 5/16 inches thick. They are made of a solid hard plastic
3 inch White Plastic Acrylic Rings 5/16 inch Thick 12 Pieces
Craft Ring