It has Piercing structure.It need not strip the connector insulation.It can do a on the spot branch in random place on the cable for definite range.Take the place of the way of beforehand branch cable.
Small installation space,save the cost of bridge and land construction,full range and types,arc surface design is suitable for connection with the same(different)diameter,wide connection scope simple installing.
It has been used safely more than 30 years in abroad.It also has used in many areas in china successfully.