This product is a set of 18 vintage old antique unique shape color glass Christmas light bulbs. These light bulbs are made of glass and come in 6 different shapes and colors. Each bulb measures approximately 2 x 1 inch (5 x 2.5 cm) and weighs about 30 grams. The brand is unique, and the bulbs are from the 1940s, making them a vintage addition to any Christmas ornament collection. Made in Japan, these vintage color glass light bulbs are a charming and nostalgic touch for the holiday season.