The Dichroic caterpillar g-spot shaft is 7 inches in length and varies from 1.25 to 1.5 inches in diameter. It's multi-colored and includes some sparkling Dichroic in between creating an interesting spiral pattern that runs around the shaft from base to tip. The shaft also has an interesting ribbed pattern just below the head. This is a very thick and heavy solid piece of Pyrex that has a clear solid flared base and is designed to stand up making it an excellent showpiece. The solid colors and Dichroic may vary from piece to piece but are always beautiful. When inserted, the thick and heavy nature of this piece will make your partner feel very full in comparison to other thinner dildos.