For 1/8" wick. Used in all of our oil lamp products.BT101 - BULK GLASS TUBE WICKHOLDERSSKU: BT101$12.80PriceQuantity*Add to CartDetails10 tubes per package. 2-1/4" long, and are used with 1/8" thick wick. The collar is about 7/16" in diameter, just a fraction more than 3/8".
