Adjustable: diameter range from 0.5mm to 1mmWith adjustable support inside， it can fit in with different pencils. Turn the wrench to the right arrowheads before use， which each arrowhead leads to different size. There are 5 different sizes of pencil leads to choose. Suitable for the needs of different groups. Classic vintage car styling， Retro elegant products，it is the best gift for relatives and friends.Product size : 215x108x133mmProduct weight : 0.72kgBrand:deli Model :0618Package including :1 x pencils sharpeners