Nice Combination: you will get 1 cello adjustable strap, 1 cello non slip mat and 2 rubber tip floor protectors, which can meet your needs for playing on different floors, suitable for different material floors | Quality Materials: the anti silp cello strap is made of quality materials, with a soft pad at the bottom, which works well on floors such as wooden floors, and the 2 black covers are made of quality rubber, which can effectively keep your floor from abrasion | Easy to Use: just put the rubber proters on the top of the cello, which is easy to carry, and put the top of the cello directly in the groove of the anti skid pad; The metal D ring of the strap can be put on the chair, and the other end place the top of the cello, so that you can better control the cello, and the webbing can be adjusted to meet your multi angle operation | Size Details: the inner diameter of the rubber tip is about 6 mm, which is suitable for most cellos; The inner diameter of the strap groove at the front end is about 3.5 cm/ 1.38 inch, and the inner diameter of the groove of the anti skid pad is 2.5 cm/ 1 inch, which can be applied with rubber tips, and can be applied alone | Necessary Tool: this non slip cello endpin anchor accessories set is an useful tool, necessary for axperienced cello players or cello lovers, it can be applied as a gift for friends or for personal use, which is a very nice choice