[High Quality] - This bed sheet corner brackets triangle tie is made of premium elastic straps, metal clips and built-in plastic clamping system. [Adjustable Length] - Allows you to Stretch your sheets as you like, adjustable from 12cm to 56cm, for different needs of families. [Triangular Design] - The bed sheet clip has a specially designed triangular pattern, which prevents the sheet from slipping elastic. [Easy to Use] - The fitted sheet stretcher allows you to easily put on and keep the corners of the sheet in place, made of elastic material, robust and durable. [Scope of delivery] - 8 pieces High quality adjustable chain tensioner, ideal for duvet cover, mattress cover, bedding, adjustable bed, murphy bed, camping, tablecloth, iron bedspread, etc.