The 3M black EPDM low voltage splices is sold 10 per case and is another quality product from 3M. Includes: Mastic Pad. The maximum diameter of the outer connector this product can be used with is 1.94 in. Among all the other aspects of this product it offers the following resistant properties: moisture-resistant. The overall length measures 12 in. This low voltage splices meets the following standards: ANSI C119.1.