Made stainless steel 316L, the stainless steel straw come with 1 large and 1 small size, the diameter for large size stainless steel straw is 1.2cm, which is for bubble tea, the diameter for small size stainless steel straw is around 0.6cm. length of both straws are around 22cm. with our laser engrave, your logo, your text can be engrave into the stainless streels. No quantity requirements for your order, you can order 1 set stainless steel as your personal gift, or you can also order 1000 pcs for your corporate gifts.