The high shrink ratio TF31 of permits for shrink to large differences in diameter. Only six sizes cover cable diameter from 1mm to 33mm, so that a reduced procurement costs and reduced space requirement. TF31 is also characterized by very good fire protection properties and is UL approved RV1. The roles of 30m are particularly suitable for the average needs. Type: TF31-40 / 13-BK-30M item: 30 MTR