These bubble pipes have four holes and come in a variety of colors. Two pictures show a variety of them on an Aladdin Bubble Pipe
card. Card says: "Make instant bubbles. Dip in warm water to blow bubbles. Re-dip when needed. Soap pellet inside pipe. Blows 4 bubbles at one time." These pipes were priced at 10 cents and most likely from the 1950s.
Similar 4-hole pipes are still made and sold in plastic bags with a Bubble Pipe header. These pipes can sometimes be found at wholesale prices for high numbers; one ad I saw was $10.80 per gross (or $7.80 per gross if you buy 20 gross).