The RNF-3000-12/4-0-STK with Heat Shrink Tubing and Sleeves HS-TBG 12/4MM BK PRICE PER METER manufactured by TE Connectivity is an insulated and sealed electrical connector. It is designed to provide electrical connection between two or more cables, wires, and hoses. The connector is made of a 12-phase heat-shrink tubing with a 4 mm inner diameter and a black color with a shrink ratio of 1:1. It is resistant to flame, abrasion, and is suitable for temperatures up to 125°C and has a wide range of applications from automation, medical, and military uses. The product comes in 3 and 4 meter lengths and is cut to order for a specific application.