[This is a pre-order listing. Assess credibility of sellers before making any payment. When in doubt, please email support. --Carousell Admin] There are 4 colours Black, yellow, blue and red. Yellow ain't in the pictures Length 9cm, inner diameter 1.2cm, Outter diameter 2.2cm Protect your shoes, lever and your damper which cost a ton Free installation if you come by my place. Jurong block 717 Easy stretchable slip on, you can DIY yourself actually This doesn't come with free delivery unlike my other items. However I can deliver this to you if you purchase this with my other items, obviously, or you buy this in bulk.