This kit is perfect for beginners. The Nipple Clamps are adjustable so you can apply as much or as little pressure as you prefer. The Kegel Balls are attached by a string for easy retrieval. The handcuffs are lined with faux fur making them more comfortable for the user as well as adding a softer more sensual side to bondage. 1 Set of keys are included for the handcuffs. Measurements: Balls: 9.5-Inch in total length, each ball measures 1.3-Inch in diameter; Clamps: 16-Inch in total length, clamp opens to approximately 0.5-Inch wide; Cuffs: Adjust from 5 to 8-Inch in inner circumference. Material: Metal, acrylic, ABS plastic, vinyl. Color: Black. Note: Kit includes one pair of fuzzy handcuffs with keys, one set of kegel balls, and one pair of nipple clamps.