my queens keep was original 2 1/4 inches. I ordered a jailbird 2 inches in length but it was still too long. So whilst in the jailbird Mistress sent my qk back and had it reduced to 1 1/2 inches. Wow what a dramatic difference. It is so snug now. Mistress said it looks like a cap on my clitty now. Will be sending the jailbird back for alterations once we are sure we can't go any smaller. Mature metal are amazing. Great workmanship and customer service.