Vinyl-Coated Lead Ring ("O" shape)

Vinyl-Coated Lead Ring ("O" shape), fits beaker size, 500 to 2000 mL, blue

Vinyl-Coated Lead Ring ("O" shape), fits beaker size, 250 to 1000 mL, blue

Vinyl-Coated Lead Ring ("O" shape), fits beaker size, 125 to 500 mL, blue

Vinyl-Coated Lead Ring ("O" shape), fits beaker size, 1000 to 4000 mL, blue