Disco Automotive Hardware. Disco Official & Authorized Dealer Full Warranty. Clamp Range: Minimum 1/4" to Maximum 2 3/4". Consists of 10 popular sizes from #4 to #36. Whether you're looking for accessories to streamline the design of your car,suv, or truck, or need a part to make your engine growl, we have what it takes at prices that can't be matched.