【Increase Protection Accuracy and Comfort】Solutek Buttons made of Aluminium is full of nobility with a larger contact make it easier for you to see and hit and more barefoot friendly.The silicone inside has a good protection on the switch,again avoiding abrasion marks. | 【Tightly Fixed】Solutek buttons have one inside sleeve and 3 set screws working together to fix Solutek footswitch topper tightly onto effects pedal switches. And Solutek toppers can be screwed off for reusage with no fears of damaging the switch. | 【Anodized Aluminum】Solutek Buttons made of Lightweight Hard Aluminum are machined to have good rondure then to be sandblasted and anodized coloring for wearing resistance and top grade looking. | 【For 3/8"10mm Switches】 Outer Diam 23mm Inner Diam 10mm for use on common 3/8" 10mm Effects Pedal Switches. 【Installation】Press Solutek toppers to fully wrap the switch as you tighten the set screws. In case any question please send enquiry. | 【Contacts】Please note that Solutek Buttons come with a worry-free 12-months warranty. We always strive to offer the best customer service and please don't hesitate to reach out via Amazon if there is anything we can help you with.