As the picture shown. Female Collar inner diameter: 11.7cm/4.6. Male Collar inner diameter: 13.5cm/5.31. Handcuff thickness: 1cm/0.31. Nner diameter: 5.3cm/2.09. Male Handcuff inner diameter: 6cm/2.36. Female Anklet inner diameter: 7.3cm/2.87. Male Anklet inner diameter: 8.0cm/3.15. Short Bar : Length 25cm. Long Bar : Length 59cm. Handcuffs: Length 23cm, width5.5cm. Anklecuffs: Length 28cm, width 6.5cm. Friendly Tips: The size is measured by hands, please allow minor error of measurement. Photo color might be a little different from the actual product due to color display of different monitors. We cannot answer your questions on Sunday, Saturday and Chinese holidays.